Hi Tim. Welcome to SRP!

It is very likely that the edge of your razor got damaged when one of those nicks in your strop was made. Stropping takes a bit of practice. It's a good idea to go very slow at first to get the motions down and then as your muscle memory improves, very gradually speed up.

Don't worry too much about the hanging hair test. If you've never tested your hair against blades of known sharpness, it doesn't mean much. Some people have hair that won't "pass" the HHT even on a razor with a great shaving edge.

If you'd like, I'll be happy to take a look at your razor and touch it up if needed - no charge.
Of course, if you live somewhere where you can find a local mentor you could probably get your razor honed (if needed) and get some personal instruction on stropping and shave technique.