Well, i don't know if it is a timing issue or a hardware issue, but increasing the RFM95_POWERUP_DELAY_MS from 10 to 100ms solved the issue.
Now testing range improvement over rfm69h, will report back.
@tekka , Great work !

If you are using pubsubclient, then

bool PubSubClient::connected()

should do the trick

I haven't ordered from them post covid-19 , but they used to be very reliable.

Well, i don't know if it is a timing issue or a hardware issue, but increasing the RFM95_POWERUP_DELAY_MS from 10 to 100ms solved the issue.
Now testing range improvement over rfm69h, will report back.
@tekka , Great work !

I'm trying to use the MY_RFM95_RFM69_COMPATIBILITY options but it does not pass the RFM95_sanityCheck.

Code compile without warning, and gateway is working fine with simple RFM95 driver.
Using esp8266 and arduino 1.8.13.

Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;67 TSF:LRT:OK
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 3;0;9;69 TSM:INIT
0;255;3;0;9;71
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;69 TSM:INIT
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) :  TSF:WUR:MS=0
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;71 TSF:WUR:MS=0
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;74 RFM95:INIT:PIN,CS
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : =15,IQP=4,IQN=4
0;255;3;0;9;78 R
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;74 RFM95:INIT:PIN,CS=15,IQP=4,IQN=4
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : FM95:INIT:RFM69
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;78 RFM95:INIT:RFM69
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;86 RFM95:SRM:MODE=4
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;86 RFM95:SRM:MODE=4
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;220 RFM95:INIT:FREQ=868000000
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;220 RFM95:INIT:FREQ=868000000
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;254 RFM95:PTX:LEVEL=20
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;254 RFM95:PTX:LEVEL=20
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;273 !RFM95:INIT:SANC
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : HK FAIL
0;255;3;0;9;276 !TSM:INIT
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;273 !RFM95:INIT:SANCHK FAIL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : :TSP FAIL
0;255;3;0;9;279 TSM:FAI
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;276 !TSM:INIT:TSP FAIL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : L:CNT=1
0;255;3;0;9;282 TSM:FAIL:
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;279 TSM:FAIL:CNT=1
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : DIS
0;255;3;0;9;285 TSF:TDI:TSL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;282 TSM:FAIL:DIS
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;285 TSF:TDI:TSL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;287 RFM95:RSL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;287 RFM95:RSL
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;295 RFM95:SRM:MODE=3
Tue Aug 17 2020 10:48:50 GMT+0100 (CET) : 0;255;3;0;9;295 RFM95:SRM:MODE=3
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10299 TSM:FAIL:RE-IN
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : IT
0;255;3;0;9;10302 TSM:INIT
0;
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10299 TSM:FAIL:RE-INIT
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10302 TSM:INIT
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 255;3;0;9;10304 RFM95:INIT:PIN,C
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : S=15,IQP=4,IQN=4
0;255;3;0;9;103
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10304 RFM95:INIT:PIN,CS=15,IQP=4,IQN=4
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 09 RFM95:INIT:RFM69
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10309 RFM95:INIT:RFM69
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10317 RFM95:SRM:MODE=4
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10317 RFM95:SRM:MODE=4
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10451 RFM95:INIT:FREQ=868000000
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10451 RFM95:INIT:FREQ=868000000
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10485 RFM95:PTX:LEVEL=20
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10485 RFM95:PTX:LEVEL=20
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10504 !RFM95:INIT:SA
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : NCHK FAIL
0;255;3;0;9;10507 !TSM
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10504 !RFM95:INIT:SANCHK FAIL
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : :INIT:TSP FAIL
0;255;3;0;9;10511
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10507 !TSM:INIT:TSP FAIL
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) :  TSM:FAIL:CNT=2
0;255;3;0;9;10514
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10511 TSM:FAIL:CNT=2
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) :  TSM:FAIL:DIS
0;255;3;0;9;10516 T
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10514 TSM:FAIL:DIS
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : SF:TDI:TSL
0;255;3;0;9;10519 RFM95:RSL
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10516 TSF:TDI:TSL
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10519 RFM95:RSL
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10527 RFM95:SRM:MODE=3
Tue Aug 17 2020 10:49:00 GMT+0100 (CET) : 0;255;3;0;9;10527 RFM95:SRM:MODE=3

Switch to tantalum if you have space, much better for battery powered as a decoupling cap, low leakage.

Choose a cap with voltage 3x to 4x of input voltage.

MLCC or tantalum caps ?

You can also go for the TI Bq25570 which has support to solar Panels, Thermal and Piezo Electric Generators and available to buy everywhere !

Hi
According to wiki, using authentication prevent from delayed replay attack, but what about using only rfm69 hardware encryption, Isn't safe ?

Regards

The problem is within the bpi SPI implementaion.
I once tried almost everything to make it work but no success.
I advice you to switched to a serial gateway as a more robust installation.