I'd be willing to give Sense another go if I could reliably unlock my door without it. Being able to connect and explicitly lock/unlock the Bolt 100% of the time is the threshold that should be met before enabling Sense. I feel that shouldn't be too much to ask.
I can report that I was able to get things back to expected responsiveness by powercycling (remove battery, reinsert) the locks and Force Closing the app to ensure the background process died. I've definitely done this in the past, though, so this isn't a new discovery - it's only a matter of time before I'm in this boat again. If it's an issue with the app being in a bad state, then perhaps there should be some timeout logic that notices this and forces the app to completely reinitialize.
I hate being so critical, but having witnessed the drama unfold over shipment alone gives me pause to wonder what happens once it's in this larger number of hands. Installation is great. Aesthetics if great. Overall physical product is great. But the sell on a product like Bolt is that I shouldn't have to touch my lock anymore, and I shouldn't have to worry about if it's going to do its job, aside from battery replacement (which I received an email on when I removed the battery and the firmware reported 0% - nice touch).
P.S. What is Eager Connect for Sense Proximity Unlock??? I see it in the app, but there is no info about it. Are there release notes somewhere with details on bug fixes and new features?