Whenever I click on to my private messages I am directed to a blank page with just a small message saying "Not found"

Any ideas?

I've... honestly got no idea why that would happen. Mahz would know more considering that it involves coding. Perhaps mention this in his Dev Journal in the News Section and he'll get to it eventually.

@Rosalind Log out and in again.

Not found is the message shown when I go on RPG again on my phone when the 'ticket' has died and the site needs me to log in again.

If you do this for some areas (like subscriptions, PM's, notifications) which are account based and different per account/private for a reason, it'll show 'not found' as a message.

Otherwise I'm out of ideas.