This is really weird. Last week I couldn't log in so requested reset password, Mumsnet never replied. So sent a message, HQ kindly gave me a manual reset code.
All fine until last night, when two innocuous posts were deleted, managed it the third time, then had to login again. Well once again email not recognised, so messaged HQ last night and again this morning.
It's working again now. So I'm wondering what I did wrong. I'm using chrome if that's any help.