One of the hardest things for novice to learn is how to strop properly. It could very-well be you are refreshing the edge on the hone, but damaging it on the strop.

Put a layer of tape on the spine, if you taped originally, it put two. Do 4-6 laps on your highest grit stone and look at the edge. Are the bevels meeting?

If so, now strop it 30-50 laps, now look at the edge, did you damage it? If not shave it.

If you damaged the edge by stropping, it is either your strop or you technique. Keep the spine on the strop, go slow, and stop before you flip.