I have double-checked that I have three months selected in the availability settings on Airbnb and through igms (the hosting tool I use), and both are set correctly. I'm sure the solution of blocking out the dates would work, but I don't want to have to keep going into the calendar to open dates all the time. I just tried changing my availability from 90 days to 180 days and then back to 90 to see if this fixes the issues.