I am using Version V2.2.16 of the application.
This morning the app started to complain about bad internet connection and showed Error Code: 40004.
I checked the connection. Everything was fine. The webportal was happy. The inverter was happy too.
I logged out. Tried to login again. Which failed with the same error code shown at the login screen.
I cleared the cache. Cleared the app entirely. Deleted and installed it again. Still 40004.
And then I had the Idea to switch to Europe and English instead of German to write a better report.
What should I say. The logging worked instantly again. Switching to german. Again Code: 40004.
So. If someone runs into the same problem today with Europe / German setting.
Switch to English and everything is fine.
Hope that helps someone
