I have two P304M power strip. Both current firmware is identical which is V1.0 | 1.0.5 Build 241213 Release 184446. The only difference it that i bought the device in different months. 3rd party compatiblity was on. 

ONE IS WORKING and the OTHER ONE is NOT WORKING in Home assistant integration. 

I use the HA Tapo ort the HACS tapo or HACS tapo controller, it really doesnt work. The erros always shows related to my tapo cloud credentials. I carefully enter the right credentials but still no luck. Why the other one is working? I remove and re-add the working one. still working!

Also the non-working i already tried many times to reset and add to my tapo. still no luck in adding home assistant.

the funny thing is that i have a Tuya  Matter/thread Hub gateway, the non working device can be added as sub-device but the working one can't be added. its strange.