Can I conduct an ICO/STO of pre-mined cryptocurrency on the skalex ICO/STO platform?

Yes, this is subject to the compatibility of the cryptocurrency with the skalex platform. If the cryptocurrency is not compatible we can add support for this cryptocurrency as a customization.

Does multicurrency funding include payment processing for Fiat currencies?

The implementation of payment processing is a separate business case and can be done as a customization request.

Can user accounts on the ICO/STO platform transfer to the exchange platform?

This depends upon how we choose to implement the exchange and the ICO/STO. If the exchange is setup after the ICO/STO ends, then we can use the ICO/STO user accounts database to setup the exchange.