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.