[rant] I'm probably wrong here

…but at least this page has a working login and some mentions of a similar error in a more complex matter.
setting up my Smart Lock is a horrible experience with having different accounts for Nuki Club and the device, different Pins for Google home (no “0” ) and the app (0-9), logins not working and login und logout options beeing hidden in the furthest corner, it’s not funny anymore…and last but not least, when you came that far and you finally want to connect your devices with Nuki Web (because for some reason there is no integration to Google Home, but for Alexa and Homekit and I feel left out) you get the error

{"detailMessage" : "Your account forbids the execution" ,"stackTrace" :[] ,"suppressedExceptions" :[]}

What a ride. I already hate it