Fixed a lot of errors, false flags and improved checks.
Added new conditions for detection, like maxium ping and minium TPS. (Only apply in some checks with default configuration, but, you can apply it in any check adding manually)
Added new placeholders ({ping} and {tps}) for verbose and logs.
Apparently, 1.7.x doesn't work with PacketEvents, I recommend use legacy versions for the moment. Probably some checks go to work with Bukkit Events if packetevents isn't in the server, like legacy versions (but with ProtocolLib).
Reset your checks.yml and language.yml if you want this changes, if you don't reset, this still go works correctly with your actual config (if is 1.2.1).