Unfortunately, the IFactory3D One Pro is currently not, to our knowledge, compatible with OctoPrint, Mainsail, Fluidd, or SimplyPrint. For the best 3D printing experience, consider other 3D printers that are compatible with this software.
Disclaimer: From the manufacturer: the One Pro is not compatible with SimplyPrint because it runs on RepRap Firmware and SimplyPrint only support Marlin (iFactory3D One) and Klipper.
SimplyPrint
No, IFactory3D One Pro is not compatible with SimplyPrint