I have the same problem as of 2/26/2020. I installed on my desktop PC in January 2020. I launched the TT and it asked me to activate my license even though I activated already.
Today I tried to install on my laptop and it said that I installed on 5 devices already with error code 603. Even though I only installed on my desktop PC. I am still on the phone with technical support over 40 minutes already. They need to find a fix and post it on here.
