Flexi Pro help

Not sure if this is the place to post this, but a customer is trying to burn some thin plates with a radius, and the program they use for their routing machine is Flexi Pro. I drew up their design, created nc files (DSTV files) and sent them out but the operator of their router doesn't know how to import them into flexi Pro.

Does anyone know how to import these files into Flexi Pro so I can let them know how to do it?

Thanks.