The redirect URI in the request, https://www.fixshop.eu/complete/google-oauth2/, does not match the ones authorized for the OAuth client. To update the authorized redirect URIs, visit: https://console.developers.google.com/apis/credentials/oauthclient/772900368433-10hfi4lulhbl5adomlm2krffujch3ita.apps.googleusercontent.com?project=772900368433