wireless rear speakers

I have the same problem as everyone else. Got from Dish, Soundbar DSB1, Base DSB2, Rear DSB3. When I follow the instructions I can get the base to connect. Then when I get the rear DSB3 to connect, the base disconnects. I have not been successful getting both DSB2 and DSB3 to connect with the soundbar together. These connect either one or the other but not both. I missing something?
thanks,

Dave