Please make sure you are running ElkRP2 version 2.0.41 and the M1XEP and your computer are on the same Local Area Network. Also double check to make sure the RS232 cable from the M1 to the M1XEP is fully pressed onto both ports and the M1 is powered On. In ElkRP2 click Setup, Options, Network Adapters and in the dropdown you should see the IP Address of your PC in the LAN. Highlight the IP of your Computer, click OK then from the Account Detail Screen click the M1XEP Setup and FIND. Does ELKRP2 FIND the M1XEP? If not try using the JP2 Jumper on the M1XEP and the Instruction on page 18 of the M1XEP Installation Manual to make sure the M1XEP is in DHCP Mode. Once in DHCP Mode try to FIND again. If you’re able to lookup the IP of the M1XEP through the router setting then manually enter the IP of the M1XEP into the System URL/IP field , Port should be 2601 and the option to “Connect Non-Secure” should NOT be checked —- please try the connection again.