Dropbox app error at application start up, but only on MacOS Sequoia 15.5

Has anyone encountered the above error when starting up the Dropbox app on MacOS Sequoia 15.5? I keep getting the above error when I try to startup the Dropbox app, after the app tries to login with my existing account (using the Basic [free] Plan). Using the same Dropbox account on iOS and iPadOS via the Dropbox app for the mobile device apps seem to work fine - meaning its not my Dropbox account issue. However when I start the app on MacOS, whether on my MacBook M3 Air, or my Mac Mini M2 Pro, I encounter the above error. The app used to work before, but until recently, that I encountered this issue.

I have tried fully uninstalling the app (using CleanMyMac) and reinstalling etc... but the problem persist.

I have checked my max number of devices connected (max 3), and that is not the issue, because I sign out of all my other devices and retried.

I have checked my storage limit, and I am far from anywhere near that limit.

If I were to run Dropbox over the MacOS Safari browser, it works fine... just the app that is giving me the problem.

I tried contacting Dropbox online chat assistance, and they too seem to have given up.

Any feedback or assistance would be very much appreciated. Thank you in advance.

Alvin

[Edited by Moderator]