it seems to be related to the MTU size set on the router. you may go to wan settings, Advanced, change MTU to 1440 or 1400.

possibly your pre-installed firmware is the location/ISP customized , which has no big difference from the one on the website. i believe the tplink would just release new firmware when they find new...

modem log seldom shows anything meaningful, moreover the TD-8616 is a pure modem with no settings required basically.

i suspect MA180 can only be plugged into the computer as it;s a USB thing.

Normally the ISP username and password are put into the modem, thus there is no need to do broadband connection on any of your wired and wireless devices at all. so i suppose you may need to do the...

i do not think it;s supported right now, hopefully a new firmware can do it