Hi everyone!

I am in the trial version of the FredoCorner. The trial version is available untill december 10th, untill today it was working perfectly fine. But today I started working on my project and I got this message all the time, and can't click on the buttons of my toolbar anymore (without getting this message)
I did all the updates, restarted sketch up, but it it still not working.

Anyone knows what to do? I am thinking of buying the license, because I think the tool works pretty good, but I just don't understand why it is suddenly not working anymore (and I need to wait for my salary ). 

Thank you!