Switch off WPS (disable) and configure Wireless Security without key (free wireless access). After that configuration you have to wireless access to router for 100%.

We will be waiting.

Try to complete your DHCP in router - gateway (address router) and DNS (ISP) addresses after that click SAVE and reboot router.

Please use Quick Setup. WAN only, Dynamic IP, and try connect cable from modem ISP to one LAN socket. Try connect wireless with your TP-link.

What is really the router model? MR3220 or MR3020?

higher resolution please! Image is too small. but what do you mean with "Configure Internet Access WAN only"? Because you have cable modem UBEE EVM220D from ISP and don't use the 3G modem. I think...