User talk:Tjaarke maas

by mistake I had been registered with two names "Yuryo" and "Tjaarke maas" I had been notified about it and tried to change the name "Tjaarke maas" to "Yuryo", to be able to have just one user name. But I've got a massage that "Yuryo" already is registered user name (one of my names) and had been suggested to chose the other name.If I follow this advice it would turn out that I have still TWO user names. Would someone , please advice me what should I do? Regarding the files which I had uploaded here it is the excerpt from wiki email on permission:

"From: Permissions <permissions@wikimedia.org> Date: 03 novembre 2010 02.44.47 GMT+01.00 To: Yury Olshansky <tjaarke.arts@gmail.com> Subject: Re: [Ticket#2010092810008441] images

Thank you, you may upload these files to http://commons.wikimedia.org/ , refering to OTRS ticket 2010092810008441 . " Yours sincerely, Johan Bos "

Thank you Best regards (Tjaarke maas (talk) 16:56, 1 May 2011 (UTC)).