Harmony 21 Premium mac - no canvas

Hello! I downloaded the trial version of harmony 21 premium for a test for a studio but no matter what i open, be it new or pre-existing scene, there is no canvas appearing and i can’t find anywhere if it’s something I forgot to activate, it’s just a window with my wallpaper in the background…
I’m on MacOS Mojave, has this happened to anyone and is there a solution?
I have 5 days left before the trial is over

Contact support about this issue.