Can't create new XD document after migrating to new Macbook Pro

Hi there.

Just this week I migrated from my mid-2014 Macbook Pro to a shiny new 2021 Macbook Pro. I migrated all my settings from my old laptop to this new one, but since doing that, I don't seem to be able to sync to my cloud documents in XD, or more annoyingly, create a new document that I can work on locally. I've followed all this steps on the page suggested (https://helpx.adobe.com/xd/kb/fix-issues-with-xd-cloud-documents.html) and none of the suggestions worked. I can open local documents without any problem, just can't open cloud documents or create a new document without the attached error popping up.

Would be grateful for any thoughts or ideas to get this working again as XD is my main work tool at the moment.