I have same issue with new hub and new soft:4.32.9249.
After connecting 30+ senator after each new sensor the hub was offline for few hours. Today it doesn’t want to connect to the sensor even that it is connected to internet. There is also no “ready to connect message).
I hope I am not forced to accept replacement as it seems like everyone is having the same issue! And I have something like 50 sensors (entry, leak, motion).
I will call Wyze tomorrow but if no solution is offered I want my money back (not a gift card). I’ve spent over 1.5k on that system and i am so disappointed.