Sorry to hear you're not happy with the theme, let me address the points you've brought up:
1.) I’m leaving 2 stars because the template actually looks like and the support is somewhat reliable, BUT when they feel like it: I've responded to all of your questions within less than 24 hours, if you feel that's not reliable then I'm sorry
2.) However, my experience with this template was horrible, so I wouldn’t recommend buying it. The template was full of bugs: In the 3 support tickets that you've opened I've fixed all the issues you mentioned, so I'm unsure what your problem is now?
3.) from the beginning and it took them almost 2 months to fix things that I reported: This is untrue, the first support ticket you opened is dated September 3rd 2021, the issue was fixed September 21st, this is a little over 2 weeks by my calculation
4.) It took a month until the template got updated and my customers could finally complete a payment (In this time I lost some customers because they wouldn’t trust the website, understandable): Again not true, I fixed this in a little over 2 weeks
5.) After that “massive” update, which was about a month ago, the calendar plugin wouldn’t sincronize and the template wouldn’t allow you to have multiple rooms on the same page (the calendar simply allows customers to book a room even though it’s already booked) so he told me to have a separated page for each room individually. Still don’t know if that’s fixed, for those who would want: There is no mention of this issue in any of your support tickets, If you don't tell me you have a problem, I can't help. For the record, iCal syncing is working fine in the latest version of the theme. You can try for yourself.
6.) Then you got the seasons bug, which also took him about 1 week or more to fix, meaning that I couldn’t have variable prices for different periods of time around the year: This is fixed
7.) And the last bug that I’ve noticed is that restrictions don’t work properly. I have one restrictions that won’t allow customers to only book one day of the weekend, which seems to work, meaning that they receive the message with the restriction. However, if they click book, they can continue with booking normally… Honestly, the template might work for someone who wants something simple, like one room and who is not expecting reliable support. I can’t recommend it: I can't replicate any of the issues you're mentioning here, restrictions are working fine. When I asked you for more information about this issue and how to replicate it you did not respond
To summarize, I'm sorry you've had some problems with the theme. I release a large update every 1 or 2 years, and the first couple of weeks after release there are bugs. This is normal with software development. However all of the issues have been fixed now and the theme and booking plugin are stable now.
If you still have issues I'm happy to help if you respond to the support ticket you opened with the information I requested.
Or if you feel the theme is not suitable for your project any more, also fine to provide you with a full refund (I already offered this to you weeks ago but you did not accept).