Can only get old playerdata by downloading Aternos server world

Yes, I've tried the uploading level.dat thing into the NBT editor, and I've tried it multiple times, but it doesn't work. My id is 14f8e7b9-8396-44ab-a49e-7d3cad4d90fd and I'm playing the Stoneblock 2 modpack with FTB. It's worked before, but I just don't know why it isn't working now. I can just go into creative to get my armor back, but the main problem is that all my items that were saved in the Transmutation Table are now gone, which is a very big problem. Please help me!

Never mind, it's fixed, I had to delete the "player" file in the level.dat AND replace the playerdata. I hope this works if anyone in the future is having problems with this and is looking for a solution.