First of all, I really appreciate your great interest, that byLock has approximately 1M registered users, which is beyond my expectations.
Handling that many users is very difficult, and it is increasing day by day. To slow it down, I UNpublished my app from AppStore a few weeks ago. It helped a lot, but not that much.
As an additional precaution, I also blocked some IP ranges (most of these ranges belong to middle east countries) because I detected some malicious connections from those IP blocks. Hopefully, this will also slow down the increase in byLock usage. If you encounter connectivity issues, try using some VPN service. There are lots of free ones out there.
Sorry for the inconvenience, but I had to do so. I hope my next app (byLock++, which is currently very buggy) will succeed in serving that many users. Hold on a little, it is on its way 🙂