I have a adobe account with a nickname, but in the community forum the system assigned me another one.
How can I change this one (of the adobe community)?
So the name on the page I linked to is not "giovannig6622250"?
No, my adobe nick is jovannig
The screenname changes are not propagating from your Adobe profile to the community forums. Adobe is aware of this and is working on a fix, but they have no provided an ETA.