The purplish color is not a big deal. Pretty common. Assuming it’s not in shade, in North no buds because they didn’t survive winter. Try winter protection.

If it has been cloudy and rainy, the buds may be late but 7/13 is starting to get close to the point where the flower buds should have opened a while ago (they look like small broccoli heads). The flower buds develop in July for me and later for you... at the ends of the stems. You cannot see them. Then they open in the Spring.

In Zone 5b, the stems from last year that carry the Spring flower buds should get zapped. Come Spring, you have dead sticks and all new growth comes from the base/crown. Is that what happened?

If the plant only blooms from last year's flower buds then in Zone 5b you get nice dark leaves and no blooms unless you winter protect. A lacecap re-bloomer version might help as it also blooms in July-ish (for you) but, it blooms again from this Spring's new stems. So, either a re-bloomer lacecap or winter protection would help. Do you know if this variety supposed to be a re-bloomer? Or do you know its name?

I could not tell if you have mulch. If you do not, I recommend 2-4" of mulch around it at all times.

These lacecaps typically prefer morning sun only (no afternoon or evening sun), dappled sun or "bright" full shade. However, if your sun is not too intense during the Summer, it may be ok.

The soil looks dry in the picture. Make sure you have increased the amount of water when you water from Spring to Summer levels.

I concur to use winter protection to reliably get blooms in your zone. Or use an Annabelle-like Hydrangea or a paniculata. Both are winter hardy and bloom hardy because the flower buds develop in late Spring ish. Some Annabelle-like hydrangeas have lacecap blooms; the paniculatas do not have lacecap blooms.

Watch out when pruning that you do it only soon after the plant has bloomed. If you prune and the plant has the invisible flower buds at the ends of the buds, you loose the blooms. So better yet, never prune if you can help it. Although it is ok to cut dead wood in the Spring.