Hope you are doing well and sorry for the trouble. As described you are unable to "print to PDF" from any other application like Word or Chrome and get the error message "Adobe Acrobat license has either expired or not been activated".
Also you have tried, ending the acrotray.exe process and able to create a pdf from a text document from within Acrobat.
If it still doesn't work, Programs that scan virus can conflict with the activation process of Acrobat. Before you activate Acrobat, temporarily disable such programs as described in the solution 3 of the help page shared and see if that works for you.