Hi @Cheri354
I believe @Mike-And-Jane0 have discovered the issue. I looked at your listing and It looks like you have your calendar availability set to 3months? Anything outside that window will be blocked and you can't manually block future dates past your availability settings since the Summer 2023 release. Your screen shot doesn't show the month, but you said it was for the "current month"?
The only way to get around this is to turn on Pro Tools and use the multicalendar to block future dates. All hosts can use Pro Tools and the multi-calendar even if you only have one listing. Below is a link to a Community Guide on how to turn on Pro Tools:
How to Use Pro Tools
https://community.withairbnb.com/t5/Community-Guides/GUIDE-Use-Pro-Tools-to-Set-Calendar-Custom-Pric...
You will have an option to block dates past your calendar availability default setting. It will look like this:
Hope this helps. Let us know if this works for you. 😊