My browser / operating system: MacOS Macintosh X 10.15.7, Chrome 128.0.0.0, No Flash version detected
All projects fail to load, 3.0 and 2.0 ones. Projects I make work fine until they are shared for about an hour. Multiple browsers have been tried: chrome and waterfox. This only happens on Scratchr2. This has happened for almost the entire time I have been active on the site.

this only happens on 2.0 version website the website version

Can't reproduce. Tested with Softin Park on:
My browser / operating system: Linux, Firefox 158.0, No Flash version detected (is actually Librewolf)
My browser / operating system: Linux, Chrome 155.0.0.0, No Flash version detected (that one is Ungoogled Chromium)
My browser / operating system: Linux, Safari 60.5, No Flash version detected (that's GNOME Web, which uses the same engine as Safari)
My browser / operating system: Linux, Firefox 140.0, Flash 32.0 (release 0) (that's Pale Moon)

All of these were tested both logged in and logged out.