I'm fairly sure that TWLoader doesn't work at all with the Acekard 2i -- the only posts in the thread mentioning it seem to all have the same problem. Has it ever been confirmed to work?
My problem is identical to
this -- dual white screens regardless of settings when launching either a game or Add Games from the flashcard. I've been trying this periodically from November or December with a clean install each time and the problem has always existed, even back when using the 3DSForwarder-generated inis.
Incidentally, I can launch TWLoader.nds when loading my flashcard directly, but it still doesn't work properly. When run through AKAIO, it fails to create any inis or icons, and if launching YSMenu first it fails on boot with a ">>HBMenu++<< (if you see this, something has gone wrong)" error.