Ping Status for
http://api.mmoui.com/: 403
-> As written above this is related to your IP address and/or firewall/proxy blocking the ping to the minion servers. Or the cloudflare antispam protection of the esoui websites which are blocking you (like written in the post above).
Try to restart your modem and get a new IP if you are able to, or try to use a VPN like the other user said, to check if the connection could be established then.