Can you show me IP address/mask/gateway and DNS when you have wireless connection with TP-LINK SSID?

These questions are for TP-LINK support. I'm not from TP-LINK staff.

Can you show me signal level from main wireless router (Wireless Scanner) ?

Very important is signal level from main wireless router and radio noise in the air. I prefer PLC because works more stable than repeater

Do you have IP address, mask and DNS after connected to your SSID?

I have tutorial but only in Polish - http://tplink-forum.pl/index.php?/topic/5677-uruchomienie-serwera-openvpn/ - maybe it will help you. Very important is public IP address on the WAN port where you...