You should try to connect your PC and TL-MR3020 with a network cable to access web-based utility. Check if your 3G card has been identified or not and check what's the wireless password.

I think priority 1 rule will take effect prior to other rules. It means it gives priotiry to the rule.

Post your test method and related screenshots. Check the speed bypass WR740 and make a comparision. To improve the speed, upgrade the firmware, reset it and reconfigure it.

In repeater mode, TL-WA701ND doesn't broadcast its own signal but it is extending your root AP's wireless signal. SSID is the same as your root AP. Try to put it betwenn your router and some place...

5 minutes after the device connected to the adapter is turned off, and the adapter will automatically switch to the power-saving Mode. If not, try to upplug ethernet cable plugged into PA2010.

Daryl, check this. http://uk.tp-link.com/where-to-buy/