A Honeywell 9565wf arrived today and after installing it, it works fine, I believe. (I haven't tested more than a couple options because the OP issue was: not working at all.)
dev:9382023-09-05 12:29:08.066 PM info Honeywell Thermo Downstairs TCC transaction: success
dev:9382023-09-05 12:29:08.053 PM info Honeywell Thermo Downstairs Last Update was Set to 09/05/2023 12:29 PM
dev:9382023-09-05 12:29:08.040 PM info Honeywell Thermo Downstairs Humidity was Set to 0
dev:9382023-09-05 12:29:08.024 PM info Honeywell Thermo Downstairs Heating was Set to 67.0
dev:9382023-09-05 12:29:08.006 PM info Honeywell Thermo Downstairs Cooling was Set to 74.0
dev:9382023-09-05 12:29:07.956 PM info Honeywell Thermo Downstairs Fan was Set to idle
dev:9382023-09-05 12:29:07.943 PM info Honeywell Thermo Downstairs Op State was Set to idle
dev:9382023-09-05 12:29:07.917 PM info Honeywell Thermo Downstairs Mode was Set to cool
dev:9382023-09-05 12:29:07.902 PM info Honeywell Thermo Downstairs Temperature was Set to 74.0
dev:9382023-09-05 12:29:07.888 PM info Honeywell Thermo Downstairs Fan was Set to null
dev:9372023-09-05 12:29:07.876 PM info Get Operating State: idle - Fan to idle
dev:9382023-09-05 12:29:07.871 PM info Honeywell Thermo Downstairs was Set to Following Schedule
dev:9372023-09-05 12:29:07.251 PM debug sending getStatus request [uri:https://mytotalconnectcomfort.com/portal/Device/CheckDataSession/xxxxxx, headers:[Accept:*/*, DNT:1, Cache:false, dataType:json, Accept-Encoding:plain, Cache-Control:max-age=0, Accept-Language:en-US,en,q=0.8, Connection:keep-alive, Referer:https://mytotalconnectcomfort.com/portal, X-Requested-With:XMLHttpRequest, User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36, Cookie:ASP.NET_SessionId=demgch33t0c3batwslqsnfy5;ADRUM_BTa=R:0|g:4678665c-ca98-46c3-acc9-561009547216|n:honeywell-prod_f7be1c76-506d-4111-81c5-fc62766aedb7;SameSite=None;ADRUM_BT1=R:0|i:197975|e:51;.ASPXAUTH_TRUEHOME=0E73F499ED130C774FFAF9ECD9303382E0136CFF27261103F649C833C77579CF9C675B54E64961015A08FA8C4E54502EF310FEAA7508D0C9D1DA2356CBEA1F182758F4BFC5834972D9E1BB9390D2E927EC0AE2CD1F6A290A8AE785859AEEC067E0410999FE4435DDAD2788C0F4D2EB5144CA0E8AD9A1E1C55ABEA4EE0A81D125693BA6E93C042BBDEBD14B875C35D0E6D825471759DCFD8F4221323FB8D7A0FD9ED02BD8DF49843FD5E0AD153D463062E7A3149B225EE954241DAC56E85C2CBDD0910DF7761D2AE5BE8FEDAEC22BF5E6E3C1B5D013A039058A47F0A42949139E0755E041844EC1D562AEA7220AB617EB916C0BCA1BEB5A945BFF28CED118EB5342BC72D3D9991E16B89874D62906CFBE2EEC8D4EF2461F63312B53B259AA204D186E13010466823EDCAFDF63329994643B3A5011092150E7D8F436067C6E409444A4D9CA2DC8CE362586E7AA2C411CED996A69A1;.ASPXAUTH_TRUEHOME_AT=JVGbjn2D1bqaZIbQOD4cYEaGltUj9IzCSCM94PHWIEPkA9n4SZGgJ6ueLmjF6AQbonY3so-_0BG0RFiGPcGhXg9m16nrqlVDXPByafPNLAE33uf7nOv7Ix6sdCaM2fdZuVrod2Or1tCsYV3e4L8dCXBQoDf-HGHKwEgNfWfGg6U19B1mu4RbDMuTwpZQ5sBaugW3RB75moBka4cBX0QNeqBCPcj9-BFMGf-RGlLzcykQSO1pRoJBYUtPtBueKJrK5WIk4rbiLyOyYODvedcWqnLS9H9_tFQ9aK968mRwGJnaNpM2GToS_DoHkcLbRlO4EP_N5qYh5olMK-FqjvCbJuhA1_gkbewAaEO7bdZjJRj_bi7tIuBfRbJBLnj9au0WbdIjSD7NyxyNTe2j_kdKfOwRlOx7cFiDIgS4JiziPMJK6xR0sCbFX3952o9n0Npje5PwMSsFChTGwXhHT8SHaosDn8dlmyd8o3D-KlLGiwJ6edEEKDGSMnv8vq-Eb0PGLBK6wIaISOjmXCZmrc5PrZCifWievxVuLqE4djWn7E-U1Shd_1sviw9X-Pwv7vTWgLm1A_eYs8SKqalcDFjhybiWiov8CXXiJxligz_1Zg82rGtwkDC36KFGmGZ0sHNaj4CNEvBFzWFNVS-GdsScAKAMxH0CXwE1BBw5KmJj_gMkYdMuq9g3PZz0DZOwceo2yhTT5A;.ASPXAUTH_TRUEHOME_RT=1zJdlXY4fOyl4hBZZhvlHyTBWMq09rGWzlLRj53JgVx6mF5PJrrVtqxMG2oEz-LsDjEUsx8OSCUvEY-VrX98ZMRkSAjowjT-BE2ILuxM1gkUVX_GV3bvDORzEjDuRgGQ2CxEzk4stUoiRRXRS5ljo3qIAOSX3xwThvqmhsWNCeiicvItNR6pKqs9ZkmoQsvJzhUxAuo8if8oAp6OZKskhnc7hdiVo0xAERAWIrpCbIz-D6exMY1cc6DegniTdMvfluCFKL9hfWOrO7_16DOupO3JgF1UYChlxGIGZW0K1uza0ADGrrzqMMD-M3CgOWgqMVICx-cVv0FzzrOUSb_cxHWXjDMB2BeVlwt2alS1fSVDwvk7mT2pt5z-aaS-gPHVAw7HwNpDQJGwY4SnOxPCnN2lzHM7sNkNlxm1qxL5BsaoFSdyWzzzprX_zhZSo0vNqGrgPC7QPcv4JUzO9MwSiH5xxO3nqn-ptkQgJsDKNpAH8nwjPd4xR2cv3heb50yjad1rndjUJVTmOvgE0FvkMiww6tzwT8W4qR9FYhrfD-r4b_nFakTS4KAI6SRAmebjjKu7O08Qoc9n6iPzsFBchrMvIMnmCPFIIXp0jp7mP5rKAwbF1CjcPpDO1pb_JgW2GWuF96wOLa0nwD55GSAIiJm9fauJhwQuD-syUICSKlH8RXD8R5XWIxREeLBNdUoRCa6o5Q;thlang=en-US;], timeout:10]
dev:9382023-09-05 12:29:07.160 PM info Honeywell Thermo Downstairs TCC transaction: begin
dev:9372023-09-05 12:29:07.149 PM debug enable outside temps = No
dev:9372023-09-05 12:29:07.143 PM debug in get humid status enable humidity = No
dev:9372023-09-05 12:29:07.136 PM debug Adding cookie to collection: thlang=en-US
dev:9372023-09-05 12:29:07.133 PM debug Adding cookie to collection: .ASPXAUTH_TRUEHOME_RT=1zJdlXY4fOyl4hBZZhvlHyTBWMq09rGWzlLRj53JgVx6mF5PJrrVtqxMG2oEz-LsDjEUsx8OSCUvEY-VrX98ZMRkSAjowjT-BE2ILuxM1gkUVX_GV3bvDORzEjDuRgGQ2CxEzk4stUoiRRXRS5ljo3qIAOSX3xwThvqmhsWNCeiicvItNR6pKqs9ZkmoQsvJzhUxAuo8if8oAp6OZKskhnc7hdiVo0xAERAWIrpCbIz-D6exMY1cc6DegniTdMvfluCFKL9hfWOrO7_16DOupO3JgF1UYChlxGIGZW0K1uza0ADGrrzqMMD-M3CgOWgqMVICx-cVv0FzzrOUSb_cxHWXjDMB2BeVlwt2alS1fSVDwvk7mT2pt5z-aaS-gPHVAw7HwNpDQJGwY4SnOxPCnN2lzHM7sNkNlxm1qxL5BsaoFSdyWzzzprX_zhZSo0vNqGrgPC7QPcv4JUzO9MwSiH5xxO3nqn-ptkQgJsDKNpAH8nwjPd4xR2cv3heb50yjad1rndjUJVTmOvgE0FvkMiww6tzwT8W4qR9FYhrfD-r4b_nFakTS4KAI6SRAmebjjKu7O08Qoc9n6iPzsFBchrMvIMnmCPFIIXp0jp7mP5rKAwbF1CjcPpDO1pb_JgW2GWuF96wOLa0nwD55GSAIiJm9fauJhwQuD-syUICSKlH8RXD8R5XWIxREeLBNdUoRCa6o5Q
dev:9372023-09-05 12:29:07.124 PM debug Adding cookie to collection: .ASPXAUTH_TRUEHOME_AT=JVGbjn2D1bqaZIbQOD4cYEaGltUj9IzCSCM94PHWIEPkA9n4SZGgJ6ueLmjF6AQbonY3so-_0BG0RFiGPcGhXg9m16nrqlVDXPByafPNLAE33uf7nOv7Ix6sdCaM2fdZuVrod2Or1tCsYV3e4L8dCXBQoDf-HGHKwEgNfWfGg6U19B1mu4RbDMuTwpZQ5sBaugW3RB75moBka4cBX0QNeqBCPcj9-BFMGf-RGlLzcykQSO1pRoJBYUtPtBueKJrK5WIk4rbiLyOyYODvedcWqnLS9H9_tFQ9aK968mRwGJnaNpM2GToS_DoHkcLbRlO4EP_N5qYh5olMK-FqjvCbJuhA1_gkbewAaEO7bdZjJRj_bi7tIuBfRbJBLnj9au0WbdIjSD7NyxyNTe2j_kdKfOwRlOx7cFiDIgS4JiziPMJK6xR0sCbFX3952o9n0Npje5PwMSsFChTGwXhHT8SHaosDn8dlmyd8o3D-KlLGiwJ6edEEKDGSMnv8vq-Eb0PGLBK6wIaISOjmXCZmrc5PrZCifWievxVuLqE4djWn7E-U1Shd_1sviw9X-Pwv7vTWgLm1A_eYs8SKqalcDFjhybiWiov8CXXiJxligz_1Zg82rGtwkDC36KFGmGZ0sHNaj4CNEvBFzWFNVS-GdsScAKAMxH0CXwE1BBw5KmJj_gMkYdMuq9g3PZz0DZOwceo2yhTT5A
dev:9372023-09-05 12:29:07.115 PM debug Adding cookie to collection: .ASPXAUTH_TRUEHOME=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
dev:9372023-09-05 12:29:07.106 PM debug Adding cookie to collection: ADRUM_BT1=R:0|i:197975|e:51
dev:9372023-09-05 12:29:07.104 PM debug Adding cookie to collection: SameSite=None
dev:9372023-09-05 12:29:07.101 PM debug Adding cookie to collection: ADRUM_BTa=R:0|g:4678665c-ca98-46c3-acc9-561009547216|n:honeywell-prod_f7be1c76-506d-4111-81c5-fc62766aedb7
dev:9372023-09-05 12:29:07.098 PM debug Adding cookie to collection: ASP.NET_SessionId=demgch33t0c3batwslqsnfy5
dev:9372023-09-05 12:29:07.095 PM debug Request was successful, 302
dev:9372023-09-05 12:29:06.629 PM debug Honeywell TCC 'login'
There in the middle is that: "sending getStatus request [uri:Honeywell Home - My Total Connect Comfort" line, showing the URL is not honeywell home.
Because my home now has two thermostats registered, I am using the Parent/Child driver, but for THIS, there is no difference in using the single driver.
My best guess remains, Panama is resolving "mytotalconnectcomfort.com" to Rachio's Honeywell Home site.