Thank you for the good luck!
And yes I have the pic here, never put a photo in the comments before so if it's not formatted right I can always email it to you.
This was on tabifab plus, I've not got the original on this cart. It happened on loading the game right past the initial screen with your QR code on it. I'm using a Gameboy colour and a cheap SD card compatible flash cartridge. Weird because I think it stores the game itself in the cartridge once loaded. But yes after that it loaded fine, I think it might have gone back a save but I only lost one puzzle's progress.
And apologies for the bad picture, it's hard enough seeing it IRL lmao