Hey,
Thanks a lot for your help. :-)
I think I'm getting close, but not quite there yet.
The errors are now reduced to these 3:
Config file didn't load. Error code: 7.000000
At: res://addons/godot-playfab/PlayFabClientConfig/PlayFabClientConfigLoader.gd:57:load()
No telemetry events to flush
At: res://addons/godot-playfab/PlayFabEvent.gd:104:_flush_playstream_event_batch()
No playstream events to flush
At: res://addons/godot-playfab/PlayFabEvent.gd:118:_flush_telemetry_event_batch()
No telemetry events to flush
From what I understand the config file is not being created or found (I cannot find it either with a standard search in Windows 10).
Thanks and take care