Is this part of my glide slope problem

So i was having an issue before with the radio frequencies not being correct on landings. However now the frequencies are correct and the runway is even represented in the ILS code above the radio frequency and the DME on the navigation gauge but the DME is not being picked up? I've been comming in rather low (2500 ft) to try and pick up the slope but maybe this is a differnt issue?

Not every ILS system has DME (if that's what you ment).