All my code keeps disappearing.

I work in Minecraft education on two devices, my personal computer at home and my school laptop. Two days ago all but one of my codes vanished from my pc and the only one that remained couldn't be opened, it had gone like 4 days since I last has opened Minecraft Edu. Although the code on my school laptop still worked even though it was outdated. Yesterday I made two more codes and today nothing on my school laptop will open, it's still there unlike on my pc but it refuses to load like the one code remaining on my pc.

What should I do, I've lost hours on hours of progress due to this. If I forgot to give information I should've please tell me and I'll try to provide it.