Hi Lisa - am just eating supper and reading stories with the kids right now - will get on the refund as soon as I am done :-)
Not sure what to do with the login issue. We did have a problem but it was related to a rogue bit of code which was left out after a recent security update. I am under the impression that everyone can get in now.
Are you logging in to .co.uk or .com ?
if you are using one, could you try the other ?