I have be using the Overkiz integration together with the somfy Tahoma box for some time now and up till now it worked perfectly.
A few day’s ago we had a power failure and after resoring the power the overkiz integration stopped working.
When I restart HA and go to the overkiz in the integrations I can see: failed to connect.
When I use the Tahoma app on my phone I can control all (4) of the shutters.
Yes, I have a IP reservation for the box in my Router.
When I ping the Tahoma box at address I assgined in the router, I get a response so that seems to work.
When I use the TaHoma app on my phone, I can connect to the box and control all screens. I entered the password I use to setup the box so the password is ok.
I also checked the pin number of the box. That also matches.