Hello @laetitia.assistante2.073108 -- thanks for your post!
Firstly, if you’ve created an Availability Schedule in Calendly you will need to make sure to click the “active on” dropdown and apply that schedule to an event type in order to see it live on your booking page. Take a look at that, first.
Secondly, if you’ve already made sure to apply the schedule (or you’ve set up the availability in the event type itself), you could be seeing times blocked off due to your connected calendar. You can use our Troubleshooting availability tool on your scheduling page in order to understand what's causing the conflict. I find it to be super helpful and it resolves most availability issues.
You’ll also want to check your “date range” and “start time increments” in your event type settings.
I hope this helps! Let us know if you get stuck!