Changes:
1.- Fixed some issues with some script functions, in some videos in particular some customizations did not work.
2.- Added "borders" to the different youtube windows, these boxes can be easily disabled from the code, it is not like they cause problems, if so, I will upload a version without the boxes or I will say in the comments how to disable them.
3.- Fixed small details that at first glance were not problematic, but in the long term would be annoying to fix.
4.- Attempted to fix the "join" button when playing a video, but was unsuccessful, however, it can still be accessed from the youtuber's channel.
5.- Adjusted the internal script that made large size videos fit small sizes, in some videos it simply did not work, now it does.
6.- The display of the window that appears when you put the mouse over the date and visit has been changed, now said window appears on top and not in the middle of the description box.
(Note: I'm considering putting borders on the main buttons: like, dislike, share, etc. Or if I should just leave them as they are now, I guess I'll try it privately and depending on the result I'll see if I do it. I'll keep trying to fix the join button bug that appears duplicated when the page is reloaded. I'll try to see if I can add an extra internal script to amplify the video volume [not much, just slightly]. If there's a problem, bug or request you can leave it in the comments, if it's something I can do I'll try to do it, otherwise maybe the original author can do it.)