Since you already e-filed and it's been accepted and processed, look at the form 8863 line 31. If there's an amount on that line, then you already got the LLC. Otherwise, if there's an amount on line 29 of the 1040 you got the American Opportunity Credit instead. You can only take one of those credits in a tax year.
The AOC can only be claimed a maximum of 4 years, while there is no limit on the years you can claim the LLC.
