Just to contribute some experience, i had NRF24L01+PA+LNA on my wifi gateway, all my battery powered sensors (NRF24L01+) were communicating fine but my relay node wasn't communicating at all i tried different arduino (nano, mini) different combination of NRF24L01+ and NRF24L01+PA+LNA but no joy, i just change NRF24L01+PA+LNA radio of my gateway and now my battery powered temperature sensors and relay node can talk to gateway. my conclusion if one node isn't working it may not be that node is faulty. so node and gateway should get checked.