Hello, this is same problems. Lost connection and authorised 5 sec. Mining BTG pool pro. Lolminer v 0.6 alpha 2
Ping the server eu.btgpool.pro   lost 6 %
Ping the google.com  lost 0 % !!!
Problem on server pool BTG! overloaded ?

My rig2 Gminer 1.10 minig BTG pool connection lost!
Sorry bad english

EDIT: set lolminer --waitforrewind 1
will help keep the connection