Did you set tones for both transmit and receive? Most repeaters need to hear a tone from your transmitter to activate but many repeaters do not send a tone when they transmit. If you have set up for your receiver to require a tone you won't hear anything from a repeater that does not transmit a tone. Set your radio up to encode (transmit) a tone but not decode a tone. Go open squelch on receive and see if that works for you.
There are sheep. There are wolves who prey on the sheep. There are sheepdogs who protect the sheep from the wolves. God protect those of us who are sheepdogs.