Good day! I hope everyone is doing well. I would like to ask assistance if this setup of mine still has a chance or would need additional device. My goal is to utilize what I currently have to not spend more on another device if possible.

Devices Involved:

-TL-ER7206 Router (DHCP Server Enabled)

-ISP A (Globe) Modem WiFi Router (DHCP Server Enabled, using all default settings provided by ISP)

-ISP B (PLDT) Modem WiFi Router (DHCP Server Enabled, using all default settings provided by ISP)

(No internet or does not work if I make the IP addresses of the 2 ISP Modems the same subnet as the TL-ER7206 Router)

-PC

-Laptop 1

-Laptop 2

Network Setup:

-ISP 1 and 2 are connected to WAN ports of the TL-ER7206 Router

-PC is connected to LAN port of TL-ER7206 Router

-Laptop 1 is connected to ISP A Modem WiFi Router

-Laptop 2 is connected to ISP B Modem WiFi Router

*From the PC behind the TL-ER7206 Router, I can ping just fine to Laptop 1 and 2 while they are connected on the said ISP Modems. This is a proof that I have a path going to them

*ISSUE*

Laptop 1 and 2 cannot ping back to PC

It seems something is blocking the connection going IN to the LAN of TL-ER7206 Router

*DESIRED OUTCOME*

Able to connect devices wherever they are connected

Either on behind TL-ER7206 Router, ISP A Modem WiFi Router or ISP B Modem WiFi Router

I hope someone can help me figure this out, what I am missing or if this is not achievable. Open to suggestions.

Thank you and have a good day