Miele addin keeps needing to authenticate

I’ve a Miele hob that I’ve connected into HA (probably the most useless device to integrate as it gives me no useful data apart from Hob On / Hob Off).

Nearly every time I reboot, the Miele addon can’t connect. It asks me to configure again probably once a month.

Configurator

Click button to configure Miele@home

CONFIGURE

Miele@home has been successfully authorized! You can close this window now!

Is this a bug with the addon, or Miele being very annoying?