My address starts with a "3" its mean that I need to wait update for coinomi which will be working with multisig? Or I can to try extract with BTG CORE? THX for help!
If your address starts with a "3", you either have a 2FA wallet or a MultiSig wallet...
Either way, currently, the only "safe" way to get access to these BTG coins would be to use BTG Core and handcraft the transactions necessary to recover the coins. You might want to read the thread here (
https://bitcointalk.org/index.php?topic=2550529.0) if you want to give it a go, or you can PM me if you want.