if you asking how to get FLT by mining, there is one :  https://prohashing.com/explorer/Fluttercoin/

account on there is need it, payouts set to 100% FLT, they accept  Scrypt and X11 hash power

Don't know, are they updated their client to v.21 already, as there was hardfork last night. Their support work fast usually, so if you ask them about it - there should not be any problem.