My pleasure, hope this grand Steem adventure works out well for both of us! Regarding ETH / ETC, it almost seems like the cryptocurrency equivalent of a stock split. Each currency, looked at individually, tends to fluctuate a lot in price, but taken together the combined ETH+ETC price is more stable. Looking at the combined price might be the best way to value them going forward, which means holding both long-term would be the best strategy. Of course too early to tell for sure just yet, will be very interesting to see what happens.

Regarding 2FA verification, I found this article, not sure if it helps your particular case but was interesting reading: http://lifehacker.com/what-do-i-do-if-i-use-two-factor-authentication-and-los-1668727532