Can you provide more information about the problem? IMDb does not document names based on a call sheet or your checks. It mainly documents what's in the on screen credits. If your name is misspelled on screen, your page says "David Dolsen," the credit for display "(as Dave Dolsen)" and that name would be listed in your AKA. That said, there is an "edit" link to the right of your AKA that allows "correct/delete/add." Did you use that? Where did the problem occur? Did it allow you to proceed, but the change never showed up?
edit to add: I see it says "This section is awaiting migration to a new system and is not currently being processed; submissions are on hold." Is that what you mean? It sounds, then, like you can't add it now. If it's to do with how your credited though, you can edit at the cast list, to add the "attribute" of (as Dave Dolsen) etc.