What's happening is this....
If your nickname is ABC and you create a profile, then change your nickname to Abc, the names don't match any more and the clipboard disappears. You can move the profile to match the nickname on this page . You can pick from the list of your nicknames and use whichever one you want.
We'll make a change to ignore the case of the nickname when putting the clipboards there, but that will fix it for now.
Cheers,
Tech