Tuya integration can't be loaded

HA had the Tuya integration up and running. All fine…
Unfortunately I forgot to extend my developer licence. From then on the integration was not loaded anymore.
I renewed the licence, removed the integration from HA and tried to put it back in again.
The following error comes up:

Error
Config flow could not be loaded: 500 Internal Server Error Server got itself in trouble

any idea what to do?

Thx, mpe

Hello mpe42,

If you are talking about the core integration for Tuya, that changed over a year ago. Uses the smartlife app.

Hi SG,
thx for your reply.
But that does not solve the problem. Following the instructions generates the same error message as above…

I assume it’s an “inner problem” of Home Assistant. So anyone?

is there really no one here that has any kind of idea what to do with this error?
Do I really have to reinstall HA to see what happens then?