Getting 403 Forbidden using Gitlab Workflow

I just have started using GitLab and have a issue with the VS Code Extension ‘Gitlab Workflow’.

Source Control in VSCode is working fine, but Workflow gives me

403 - “{“message”:“403 Forbidden”}”

Does this mean my IP is blocked (maybe due to a high number of failed authorization attempts) ?
If this is the case, what do I have to do getting my IP released again?