I could not register at 1st attempt, app became unresposive even after restarting it.
Then I deleted all of its settings and registered again.
This time I waited much longer and the app looks ok now.
This was the log from starting it for 2nd registration:
Log warning: The log 'Services.Common.RESTRequest' is configured to use the preference 'services.common.log.logger.rest.request' - you must adjust the level by setting this preference, not by using the level setter
JavaScript error: resource://gre/modules/ExtensionCommon.jsm, line 2312: Error: primed listener not re-registered
console.warn: LoginRecipes: "getRecipes: falling back to a synchronous message for:" "https://id.twitch.tv"
JavaScript error: resource://gre/modules/ExtensionContent.jsm, line 567: TypeError: Argument 1 of PrecompiledScript.executeInGlobal is not an object.
1585834084725 Sync.Engine.Extension-Storage ERROR Syncing {73a6fe31-595d-460b-a920-fcc0f8843232}: request failed: TypeError: NetworkError when attempting to fetch resource. No traceback available
1585834084729 Sync.ErrorHandler ERROR Some engines did not sync correctly.
I could not register at 1st attempt, app became unresposive even after restarting it.
Then I deleted all of its settings and registered again.
This time I waited much longer and the app looks ok now.
This was the log from starting it for 2nd registration:
Log warning: The log 'Services.Common.RESTRequest' is configured to use the preference 'services.common.log.logger.rest.request' - you must adjust the level by setting this preference, not by using the level setter
JavaScript error: resource://gre/modules/ExtensionCommon.jsm, line 2312: Error: primed listener not re-registered
console.warn: LoginRecipes: "getRecipes: falling back to a synchronous message for:" "https://id.twitch.tv"
JavaScript error: resource://gre/modules/ExtensionContent.jsm, line 567: TypeError: Argument 1 of PrecompiledScript.executeInGlobal is not an object.
1585834084725 Sync.Engine.Extension-Storage ERROR Syncing {73a6fe31-595d-460b-a920-fcc0f8843232}: request failed: TypeError: NetworkError when attempting to fetch resource. No traceback available
1585834084729 Sync.ErrorHandler ERROR Some engines did not sync correctly.