KI 0853 Error "Sign in failed, email already taken" when logging into UiB's Gitlab
(updated )
You can check if this is the case by logging into UiBs Gitlab using your Github credentials, and examining your profile (https://git.app.uib.no/profile). If your UiB email address is your registered email for this account, you must change it to be able to use Dataporten as a login option.
After changing the email address you should be able to access Gitlab using the Dataporten login option.