ESP8266 not getting connected to QGC or matek H743 mini FC

[siddhantTech]

Hi
I have been facing the same problem under the below configuration:

Matek -H743-mini as the FC (Flight controller) with PX4 firmware for Autopilot
ESP8266 with mavesp8266 as the firmware from dogmaphobic/mavesp8266
mavesp8266 as the firmware from dogmaphobic/mavesp8266
With this set-up in place, the laptop can connect with Wifi SSID pixracer but mavesp8266 is not able to get connected to matek-H743-mini firmware on below UART port

TX1, RX1 (Serial no 2 or telem2)
TX7, RX7 (Serial no. 1 or telem1)
as attached the UART mapping diagram of matek FC.
MatekUARTMapping
Below is output from mavlink status on nsh:
For below output, the wire is connected UART- TX1 and RX1
instance #0:
mavlink chan: #0
type: GENERIC LINK OR RADIO
flow control: OFF
rates:
tx: 445.3 B/s
txerr: 0.0 B/s
tx rate mult: 0.412
tx rate max: 1200 B/s
rx: 0.0 B/s
rx loss: 0.0%
FTP enabled: YES, TX enabled: YES
mode: Normal
MAVLink version: 2
transport protocol: serial (/dev/ttyS2 @921600)

instance #1:
GCS heartbeat valid
mavlink chan: #1
type: USB CDC
flow control: ON
rates:
tx: 20764.4 B/s
txerr: 0.0 B/s
tx rate mult: 1.000
tx rate max: 100000 B/s
rx: 47.0 B/s
rx loss: 0.0%
Received Messages:
sysid:255, compid:190, Total: 44 (lost: 0)
FTP enabled: YES, TX enabled: YES
mode: Config
MAVLink version: 2
transport protocol: serial (/dev/ttyACM0 @2000000)
ping statistics:
last: 0.76 ms
mean: 4.86 ms
max: 82.09 ms
min: 0.76 ms
dropped packets: 0

Debug log from ESP8266.

........................................Got 1 client(s)
Start WiFi Bridge
Local IP: 192.168.4.1
Swapping uarts from TXRX to TXD2/RXD2...
Setup Finished.. Going into main loop...
Calling GCS.readMessage()
Inside GCS._readMessage() - udp_count: 0
Calling Vehicle.readMessage()
Inside Vehicle._readMessage() if Serial Available
After Serial Read
Calling GCS.readMessage()
Inside GCS._readMessage() - udp_count: 0
Calling Vehicle.readMessage()
Calling GCS.readMessage()

Please let me know for any solution to this problem.

Thanks
Sidd Tech