Installed on the openTX 2.2.3 remot control. The R9M transmitter module and the R9 Slim + receiver updated to the latest firmware FW_Ranger9_TX_20190117 and FW_Ranger9_RX_20190201, respectively. The problem did not disappear. Also, from the receiver R9 Slim + 2 messages come to the remot control and that’s it. But it is necessary to disconnect from the receiver and turn on the power for one second messages begin to arrive and the telemetry starts to work normally. I took the receiver from a friend, the same problem with it. But there are no problems with X8R and XSR receivers, they work flawlessly and transmit telemetry perfectly. What else can you do to fix the problem. Maybe some kind of log file with the information you send?