Expand MAC address filter list - EA6500 :(

Hi folks

I manage the network in my apartment complex

I went to many stores all over my country to get the most powerful router possible.

Finally decided upon the LINKSYS AC1750 (EA6500) since it was the most powerful option available. 

I am adding the people in my apartment complex to the MAC address filter but the router only allows 32 mac addresses

This is really teribble since I need to add more people on the network

The network also has a secure password, but tenants cannot be trusted to not share the password. 

Is there anything I can do ??

Please help