I moved to that app ages ago, but I rarely use the integration so it wasn't a bother for me.
I just poked around and things still work (at least for gen2; not 100% sure about gen1 but I don't really see why it wouldn't).
The only changes that need to be made from this code are to change the URL a bit and add the MAC address you get when inspecting.
https://device.deltafaucet.com/api/device/v2/UsageReport?macAddress=[ALLCAPSMAC]&interval=0
and
https://device.deltafaucet.com/api/device/v3/toggleWater?macAddress=[ALLCAPSMAC]&toggle=on
as examples.
You can still also pull device_id and bearer tokens if you inspect during login (I use Google; same principle applies for each). When you first log in via whichever, have live inspection going and look for userInfo and the ID is still there.
