Frigidaire Not Making Ice or Dispensing Water?

I have a side by side Frigidaire that is about 2 months out of warranty...go figure. I first noticed the water was slowing down and then a few days later I noticed the ice tray was almost empty, but the arm was down to make ice. I checked the water line into the back of the fridge and it had good flow. The filter change indicator never came on, but I changed the filter anyway. I have an under sink RO system so the filter should not need changing anyway. Any ideas?

By Burney