edwin1234 wrote: ↑Friday 22 January 2021 13:54 Do you still use a googlemail adres in your new working account?

Hi, I didn't use a google address for the second case and works fine.
Probably Google appplies some security policy that could create problem to the plugin.
Anyway, hope this solution is the right one for all.
Thank you.

RESOLVED

- At the beginning I created a new account in Tuya via Google
- The authentication in Domoticz via Tuya plugin didn't work
- I closed the account in Tuya
- I created a new account with a different email and using a simple password (no special characters)

All works fine.

I've got the same problem.
Don't understand what's going bad.