"Trouble setting up" as in the ThermaQ probes won't link?
If so, Bluetooth LE peripherals will only accept incoming connections from one “central” device at a time. How the device defines a “connection” is up to the hardware/software of that device, i.e. how long before that connection times out. So, if you downloaded the ThermaQ app (even on another device or platform), and then tried to connect with Roastmaster, the ThermaQ app is probably holding onto the Bluetooth connection, even if the app is in the background.
Try terminating the ThermaQ app wherever it is in use - Android or iOS. Also, verify you've chosen a port in Roastamster's Probe Details screen.
Let me know how it goes.