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Tell me what color wires went to what terminals on old and where you put them on new.
If you connected the blue wire from B on old to B on new, you most likely blew a small fuse in the air handler .That B will have to go to C on new.Let me know and we will go from here.
Give me a few moments to look over
OK after looking over the manual on the new thermostat I see that it is not designed to work with your heat pump with backup heat .It will work with the heat pump, but you will not have the electric backup strips if you choose to use this thermostat.It is considered a single stage heat/single stage cool thermostat.You need a 2 stage heat/1 stage cool thermostat.
If you chose to use this thermostat and sacrifice the backup heat ,
You will wire as follows:
Red to RC with jumper to RH (24v power)
Orange to O (Reversing valve)
Green to G (Fan)
Yellow to Y (AC contactor)
All others taped off. Let me know and we will go from here.