I have confirmed the issue where the Google Drive links are no longer accessible.
Since the links are still working for me, it appears that Google may have restricted or blocked access on their end. As a result, I will likely need to move all of the files to a different platform and then re-share all of the links.
I'm not sure how long this will take, but if it ends up being a lengthy process, I may have to postpone the remaining work planned for this month until next month.
I apologize for the inconvenience and appreciate your patience.