Great, I’m happy to hear your connection’s now working correctly, and thanks for coming back to report on it.
It sounds like the Android app connectivity issue you’re experiencing is one of the known issues with 4.3.0 (there’s some advice behind this link).
Random vibrations is new to me and I don’t see discussion about it on the forum. Similarly
for the random crashes; you shouldn’t be experiencing those. If they continue, I’d recommend posting a bug report separately (if we continue the discussion here, it’s liable to get lost in the earlier discussion).