We plan to support Bitcore in the future. We aren't currently supporting S2X because we can't find an exchange for it. Do you know of one?
HitBTC has B2X listed in their deposit/withdrawal section but it currently seems to be disabled. YoBit also has B2X listed in their deposit section but displays "No free addresses for such currency. Please try again in 2 minutes." every time I try to generate one.