welcome to CC @J-A-1
That's most unfortunate.
Have you tried to do custom weekly booking settings?
You may like to use related keywords here in CC as there's likely to be a quick solution and explanation how to fix the issue.
Make sure in the meantime that you write that your listing is indeed available from Saturday to Saturday so potential Guests can see you are not fully booked.
I'm sure one of the regulars who comes in here will have the easiest solution.
All the best & Happy Hosting