Complex sentence: The cafe did run a free safety-service for walkers, however that has been temporarily suspended, but walkers can still register the beginning and end of their walk at Pen-y-ghent Cafe.
Split into simpler sentences: The cafe did run a free safety-service for walkers, but that has been temporarily suspended. However, walkers can still register the beginning and end of their walk at Pen-y-ghent Cafe.