Ok.. I don't even know what to think of this now. Maybe this software isn't trash but it's glitchy for sure. Deleting 99% of the fixed the issue, so then I just deleted 1 video and that also fixed the issue so I places it back in and everything is back to normal.
In defence I did try a bunch of different actions like adding new files and changing effects in missing videos to fix the problem but only deleting one of the missing videos actually fixes the issue.
I'll give VideoPad one last chance. Being calmer now realizing I didn't waste 20 hours of work I wish to explain that I just don't have the time right now to send you the videos and follow instructions to get my work fixed that's why I don't want to send them right now. When I have more time I will send the broken files still on my laptop to maybe find out how to prevent these issues in future.
Big thanks for the fast replies though. Trash software, good support.