I would like to participate in the upcoming Byteball distribution by signing messages with my Ledge Nano S chrome wallet, but ran into a problem.  When I enter my BTC address in the Byteball Transition Bot, it responds "Only P2PKH addresses are supported."  Is this because my BTC is in SegWit addresses? 

I have not updated to the latest version of the Byteball wallet; does it support SegWit addresses?