B4R Question esp32 does not receive UDP broadcast data

hi.
i use udp in b4a,b4j,b4r and it works fine when set client ip.
i can send data to 192.168.1.255 from esp32 and all client windows and android can get all data.
but my esp32 not get broadcast data just could get data when i send data to esp32 ip.(192.168.1.2)
i think my modem access point limit esp32 because when change access point it works fine.
any idea?