It rejects Do I have much.
Maybe "a lán" only means "many", and "mórán" means "much"? I don't really know.
Yes, that's a possibility although Ó Dónaill gives both "much" and "many" for a lán in the phrases section and also in meaning number 5.
"Do I have enough" was rejected. Is it my error or theirs?
Do I have enough = An bhfuil go leor agam or An bhfuil mo dhóthain agam.
Go raibh míle maith agat!
I was correct with "Do I have many?" But the translation at to of this discusdion page is "Do you have many?"...?
"Am I full?" was also rejected.