Pages file does not load on iCloud web

I am trying to open my Pages files on iCloud Web, but all files show the error message "Something Went Wrong".

I use a Windows PC.

Issue happens on any browser I try (Chrome, Firefox or Brave).

Already tried Clearing Cache and Cookies, Logging out, restarting PC and clearing history.

Issue only happening on Pages.

Keynote or Numbers files open normally.

Already Called Apple Support, and was told they can't do anything because the issue is not happening on Apple Devices, but still, it can't be related to my PC, as it happens on multiple browsers

[Re-Titled by Moderator]