Thanks for the input. If you're just trying to do basic YouTube embedding, this plugin is probably not for you. Some people wish to add more to their YouTube embeds: annotations, chapters, reactions, extra playback controls... (all free). This plugin and player has been written for them. The PRO features were developed later, by request from existing users; the charge helps to fund part of the serving and development of the player.
Unfortunately, the rest of your comment doesn't particular help from a support standpoint as it's not clear what/why you are actually manually editing given that there's a free wizard that generates the code to paste.