Is there something wrong with the export to html5 button?

If I download my project to html5 it just shows a black screen when i run it via itch.io or click dubbel click the index.html file (yes i dubbel click it in the .zip file and i do the .zip file as the thing itch.io has to run and it worked 2 days ago but know does not)

Did you upload the index.html file, or the .zip file, because when you upload Microstudio HTML files you need to use the zip file because there is a lot of stuff that is in the many different files, including the sprites.

Ohhhhh.... I need to upload the zip😅