Just worked on this with the Zoos S2 Zstick 700 (paired without security). Used PC Controller to pair the FGMS-001 without any security-- worked perfectly. After a few minutes and a few clicks (may have been placebo, but Update on the PC Controller, Discover on Hubitat), the sensors all came online without S0. Yay.
So something's fixed it. It was either that it was included with PC Controller - or that it's paired without S0.
