Press space to attempt the cloud download. If you think that the script is softlocked, press R to reset the cloud variables. Press R to try again. It might not work. This is a trial project, it's to be expected.If it doesn't first try hitting R and then trying again.
This project is a example of example of scratch cloud storage. I believe uploading is also doable, but I have not implemented it. Backend can be found here: https://github.com/dormieriancitizen/ScratchCloudStorage/blob/main/main.py Thanks to Rex for their PTE, thanks to ScratchConnect for the library.