iphone 4 musescore app forever locks me out

can someone on the server side pls help.
I cannot seem to get logged in using my lordbrighton user name on my iphone 4.
I have even tried creating a new account, but on the iphone , the app keeps rejecting anything i put in the username and password.
I would like to be able to log in with my existing acccount: lordbrighton
So could you please check to see if there is a period after lordbrighton, like this lordbrighton.
or is it without a period.
I also tried resetting my password here in the main site, but still no luck.

Should i delete musescore and try downloading it again from the app store?

Many thanks for your help and this wonderful software.

Cheers
Bryan aka lordbrighton or lordbrighton.