Did he receive a 221g paper? If so what was marked?
I know you are very emotional with this news but you must keep your head.
When you go to Maroc you can go up to the window at the Embassy and wait in line on the street. But they do not let you in to plead your case. So this idea might be a waste of your time.
Like all have advised no Appeals for AP...
I am not familiar with your story, but the facts are you stated you are 17 years older then your fiance, and did meet online. Just those two are solid Red Flags for CASA.
How long did you know each other? How long did you spend together and how soon after did you file? How did he answer his questions? Was he overtly nervous? Do you share religious beliefs? Many other things could have added to their suspicion that he is just looking for an American Wife.
If it was me (and guess what? it was once)...I would really talk with the fiance and HEAR what went on in the interview in as much detail he can give now that the shock is over, find out if there was a 221g
And...... Take the time on this trip to be with him MORE. Face to Face. Enjoy his family. Go places together in this beautiful Country. Keep your documents and take great pics with everyone. Its for your benefit to know his intentions better too.
You might have to abandon this K1
and pursue the Spousal Visa. If it is love and meant to be...this is what we do to be together.
