My Garmin connects to a wrong Strava account because I cannot login to Strava in Garmin connect through Google. Is this gonna be fixed soon?
Sounds like you need to reestablish the connection using the web sites rather then the apps for both Strava and Garmin
See thread and post marked as answer: Uploading activities from the Garmin Connect app to Strava
problem is that I created my Strava account through Google
From Strava support site: How to switch to an email & password login – Strava Support