Okay, changing it back to MBC5 made the save file work again on emulator! I'll have to try it on hardware as well. I had changed it to MBC3 for the cartridge type I had for the convention.
Edit: It works on my EverDrive on a GBC as well! Thank you again so much for letting me know! There is a new version available for download. If you try it out, please feel free to drop me a line about how it's working for you!