what game engine did you use
Viewing post in I Found Some POTATOS! DEMO comments
add web preset in export window, click export project, make a folder called "index" (all lowercase) and export to that folder with name set as "index.html" (all lowercase), then zip the folder, upload it to itch.io, check the "this file will be played in the browser" button, and turn on "SharedArrayBuffer support" under frame options