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Hi, I'm Mike G and I'll be assisting you. The set of wires( red & white) should be the heater leads. The other set are for the light and fan.
You mentioned that you have a pair of switches with a jumper installed between them. They are for the light and fan. The last switch is for the heater.
The connection in the unit are as given previously. The diagram shows a single switch device with 3 switches on it. If you are connected at the unit as instructed and only the heat works, either the hot or the neutral is not correct at the switches. Do you have a 2 wire voltage tester? You'll need to check for voltage on the fan and light switches.
If it would be easier to coach you on the phone, just accept the phone service offer.