RG1XX keeps disconnecting

Hi there! Im working with Laird Sentrius RG119 Gateway and a RAK7200 node. Network works fine for a while, but then Gateway enter on a Connect-Receive Gateway Status-Disconnect bucle ending up in a connection lost. I configured the RG1xx with CUPS and LNS, as recommended here Can't get Laird RG1xx Basics Station Forwarder working with TTN - #15 by jakymiwm but problem persist. Am I missing something?