Logged in after a long time, it's showing me an early version of my project

[Taifun]

@Louis_Masih

no need to save in file explorer

why you should do backups is explained here

Back up your work with an aia file! By @Enis

This tip has been written by longterm power user @Enis. As his webpage soon might go away, I think, it is in his sense if we rescue the most important part of his tips for App Inventor here in the community. App Inventor is a cloud-based Android development environment. MIT has provided a simple way to back up your work, which you should do on a REGULAR basis. To backup your project, you export it to an AIA file that gets stored on your computer. Now, you may think it isn’t important, or that …

Taifun