ubuntu one client cannot be linked to ubuntu one subs

I have installed ubuntu-one client running ubuntu 9.04 with a 2 gb subs. After upgrading to 9.10 the client was not working properly anymore, so I decided to reinstall the client. First, on my website, I removed all links to my computer, and then I completly removed all packages you can find when you search for "ubuntuone" in synaptic. After a reboot, I reinstalled the client using the apt-url from the client install help web site. then I launched ubuntu one. But there was no possibilty to add my computer. Instead, the client seems to believe, that the connection is ok. so it comes up with the normal icon on the tray, and says something about "now synchronizing". But without a link to my computer it will not work, of course.