What is limit for unlicensed version?

If you mean the free version, it's very outdated and missing a lot of the features in the full version. The full application has no limitations when unlicensed however, just the timer at the start.

I mean that there are two button on start of Pyxel Edit: 1) "Activate" 2) "Later".
I pressed "Later".
And I press it every time I start the applacation.