How to configure Lora CLASS A RxWindow. I have configured MAX_RX_WINDOW in RegionEU868.h but it is not getting reflected and in CLASS A Rx1 and Rx2 slots getting closed with in 100 msec

[AJ.2]

1081s730:MAC txDone<CR><LF>

02-05-2021 23:17:35.489 [RX] - 1082s751:RX_1 on freq xxxxxxxxx Hz at DR 0<CR><LF>

1082s958:MAC rxTimeOut<CR><LF>

1083s715:RX_2 on freq xxxxxxxxx Hz at DR 2<CR><LF>

02-05-2021 23:17:36.528 [RX] - 1083s791:MAC rxTimeOut<CR><LF>