Thanks i found a temporaly solution.
Change in RFM95.h this ligne
#define RFM95_RETRY_TIMEOUT_MS (500ul) //!< Timeout for ACK, adjustments needed if modem configuration changed (air time different)
by
#define RFM95_RETRY_TIMEOUT_MS (5000ul) //!< Timeout for ACK, adjustments needed if modem configuration changed (air time different)
and change in Mytransport.h
#define MY_TRANSPORT_STATE_TIMEOUT_MS (2*1000ul) //!< general state timeout (in ms)
by
#define MY_TRANSPORT_STATE_TIMEOUT_MS (30*1000ul) //!< 2 changed to RFM95W Ultra long Range enable general state timeout (in ms)
and it work fine.
