Same issue here. Same thing that happened last week? Last week GitLab sent me this:
On 2024-09-02, we identified an issue on GitLab.com that may have caused delays in your pipeline execution. The issue could have resulted in your runner experiencing timeouts while communicating with GitLab.com infrastructure, leading to your runner cycling through minutes and a slowdown in pipeline execution.
To compensate for any potential impact on your workflow, we are resetting your minutes to the full monthly amount included in your tier for the month of September. This ensures you have the full quota of minutes available for the current month, even if some were used unexpectedly due to the issue.