There is only a per eligible request limit of $5000. A landlord can only receive up to $5000 beyond the security deposit for any dwelling unit if an eligible graduate leaves within the first year.
There is no per landlord lifetime limit on the fund. This is to allow landlords to rent to as many Rent Well graduates at a single time. If the Rent Well program notices abuse of the funds, the Rent Well program can opt to not enter into future agreements with that landlord.