Unable to edit existing articles - Request was rejected error

I’m unable to edit existing articles within Ghost without receiving the “Request was rejected because user is not permitted to perform this operation.” error.

Here’s what I’m doing:

I’m logging into Ghost while using a VPN (I’ve also tried turning it off) and trying to edit elements like internal links and/or the page’s metadata.

I’ve also tried using different browsers as well but still no dice.

Any help would be much appreciated!

Cheers :)