I have experienced some problems I want to share.
Keep logged in doesn't work, when returning I was asked to log in again.
Today it was possibel to quit and return but is there a time-out? Shouldn't be.

When asked to recover pw last week no mail arrived, worked today.
Mail should mention user ID.
Couldn't log in as I forgot ID and asumed it was the mail-address.
after several tries I managed to login.

Login should be simple and transparent, place for improvements maybe?