So, I opened a previous project from Dec 2020. Updated it to the current stable version.
Every time I try to preview it the same message appears > Please wait, loading...
After it, the preview does not load at all. At the opening of the debug, the project percent remains at 0%.
I tried to test the same with a small project, the same text message appeared, and eventually, it loaded the construct 3 default screen.
I made a backup of my project and erased around 90% of the data. And it did preview it.
But after optimizing the completed one into approachable standards, it still could not load and got stuck in the message.
Is this eternal screen caused by having a project surpassing the free license?
Or is it just Construct having a limit of data it cannot handle anymore?