Can someone tell if Acrobat is compatible with Mac OS High Sierra?

Let me add one thing to what Joel said: The biggest problem with a combination of old Acrobat and new operating system (it does not matter if we are talking Windows or macOS here) is that when something all of a sudden does not work anymore, it's impossible to say if this is due to a new incompatibility (e.g. OS upgrade), or a configuration change. The latter can - if you know what was done - very likely be reversed, with the former, you are very likely out of luck. However, to find out which one you are dealing with may be impossible, based just on the symptoms.

Thanks for the respond. Would you know or advise on the best or most stable OS for Acrobat X? I need to resolve this problem real soon because I feel lost without my computer and my Acrobat program.