Hi Tom,
Thanks a lot for your query and we are so sorry about the trouble this must have caused.
It seems like the Fetching is still in progress. You should ideally see an update cache button there:

Can you please deauthorize GSC and then authorize it again?
That should do the trick.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.