check out their telegram group, but i believe they are working on clearnet support like full time for their next release ( no due date ). but in addition there are some other DIY folks in that telegram group that can probably help you with current setup.

this is a good resource too https://community.start9.com/

Sorry I've not got the expertise to help with your current set up, iv just read on their support forums the next big release will include native clearnet support