The password reminder was playing up, so some people haven’t been able to login to the poster design tool. This is now fixed, and everyone should be able to get a password reminder by clicking on the forgotten password button and entering their email address.
Apologies to anyone who this caused problems for, for how long this took to fix. Chris – our developer – had just gotten married when it broke and has just got back from his honeymoon. We’ll try and set it up so anything like this doesn’t hold up fixes when they’re needed.