By removing country and changing mode to sta in the wireless config and following @michal-Rok i could connect to my MT rb2011, however could not connect to the internet! In frustration i turned my laptop into a hotspot and connected/upgraded etc with few issues.
I have upgraded to 0.1.10 B160 however that has not helped connection to MT. I too have wasted hours on this and will 'pause' in the hopes the Onion team will actually look into this and come up with a permanent solution.
Concur with the sentiment about poor engineering/support when a product like this will attract users with MT routers. I'm not an expert on openwrt however would have thought there's a simple solution!