Just went through the Ting deal getting a new SIM card up and running for a 2G FONA Feather.
You can't do it through their website form. It says that the phone type is incompatible and you are done.
But..
I already have a running FONA Feather cellphone using a Ting SIM card. So, I talked to them on their online chat thing. They came up with, "Its a general purpose card, so we can just enable it and see what happens". Actually, I had an out of date card and they offered to send me a new one. Today I got the new card, went back on their chat thing and they blindly activated my new card.
Works fine!
So don't worry, be happy. You can still get 2G Ting cards and get them activated at Ting, if you spend some time chatting with them.
-jim lee