iPhone log-on to Ember fails

On the iPhone when logging on with Ember I get the message "Incorrect
email/password combination." I log on using the same domain, email
and password as I do when logging on via the web which works fine.

I have tried to change my password on Campfire a few times to see if
this could somehow help...but I keep getting the same message from
Ember even with updated passwords. Please help.

Thanks! :-)