Guess I shouldn't have been anticipating a long wait from technical support, since I heard back and their instructions resolved the problem.
Save your work, exit out of any programs that are running
Shut down the computer completely, then reboot
RIGHT-click on the program's desktop icon and choose Run As Administrator
If prompted to associate plan files, click Yes
Once the software is open, close it and try opening it normally to see if you still receive the same warning
These steps are in the article too, but I just hadn't made it that far yet. Anyway, seems to be working fine now, so maybe this can help someone else down the line!