I spent hours configuring all my music, and then I clicked the button "save config". The screen reloaded, and then I checked my configs to see if they were the same. AND THEY WERE JUST REVERTED BACK TO THE DEFAULTS.

Edit: Nevermind I figured out how to prevent that from happening.

It's always a pleasure to help, but this would be even better if you would not shout out that this mod is a scam.
Then, I would like to know if you selected the resource pack in your list, as written in the description. If not, it won't work, but your work will not be lost. Indeed, saving should save your work. I just didn't figure out how to select the resource pack automatically for now.
If it wasn't your problem, I would like to know how you prevented that. The mod may have bugs, just like any mod. And it's even more likely when you're playing with a mod in beta. Feel free to share any issue you encounter, and I'll be glad to help again =)

If it wasn't your problem, I would like to know how you prevented that.

I would be pleased if you let me know :)

All I had to do was just load the resource pack.