Not sure of the intended meaning here- ' three mortgage payments' perhaps?
"Elle a trois crédits" means she has contracted loans from 3 different sources
Loans or mortgages, yes. This is one of those "Report a problem to duolingo" situations
What would you like to report on? loans or mortgages are also accepted.
"Credits" is not acceptable English here. (Except perhaps if you're in a science fiction movie, and the cost of the house is three credits.)
All right! Changes made now. Thank you.