I’m a teacher and I have a free account and the system worked well for many months with low numbers of bookings, but since lockdown I have been using it a lot more, but in the last few weeks it keeps turning itself off and saying the calendar is unavailable. If I login to the dashboard then it starts working again. This has got to the stage now that I have to login to the dashboard every few hours now and my students have started to complain. I am starting to look around for something else.
TBH $10 a month is too much for my fairly simple needs so I don’t think I would pay for it, but I would be happy for you put adverts on the bookings page.
Thanks for your time and support.