I experienced the same issue with repeated requests to activate for a single license on a single computer. The activation system is not counting the number of computers...it is counting the number of separate activation requests which assumes that one activates one time on a single computer. Therein lies the problem.
I spoke with a wonderful woman in Miami who advised me to turn off Malwarebytes. It blocks TT from searching the computer to see if the software has been activated. The "block" forces another activation...and then another the next time you access TT, etc. until you've reached the limit of five.
I turned off Malwarebytes, uninstalled it from my pc, and activated with a new code that TT provided me. A a test, I was able to re-access the software without activation after both (1) closing out the app and (2) closing out the app and restarting the computer.
Fingers crossed.
