Port forwarding

my main ISP router from the living room is an ATNT Uverse that is connected to my centurylink router that goes to my bedroom and from there i have a little netgear switch that is connected to my centurylink router and provide internet to all my room devices through lan port including my GL Inet which i configure as a server. i download the server configuration then export it to my other router from another country where i have another GL Inet client which the connection refused to established.
please kindly help me with a few ideas that might be missing on the configuration