Hello, some sad news I'm afraid.
I had an email this morning from the company that hosts the main Mathema website.
The site had been hacked and I just wanted to leave a note here to try and warn anyone who gets asked for their details.
These people have nothing to do with Mathema. I'm disgusted and upset that they've been able to access the site pretending to be associated with it.
The Mathema site has been closed for the moment because of this. Hopefully the problem will soon be sorted out.