✨AI-Generated response✨
Verify that the receiver TX is connected to the RX2 pad on the flight controller, and the receiver RX is connected to the TX2 pad. Double check that you have enabled Serial RX for UART 2 and selected CRSF as the protocol in the Betaflight Configurator, on the Ports and Configuration tabs respectively. Please see the wiring-up guide and FC configuration page for details. Also, check for any other general troubleshooting steps that might be helpful in the troubleshooting section.
If this wasn't helpful, please follow up in #help-and-support for ELRS help or #general-quad-help for other things.