Model :

Hardware Version :

Firmware Version :

ISP :

I have a C59 which I've setup in the far corners of the house to offer Wifi/Wired connections there - my 'Master' Router is connected to it's WAN Port

It's working fine for Internet access and I can FTP into the Shared USB Device from the 'Master' side of the Network

Sadly, because the TP requires me to use it's DHCP server (no passthru/relay option) and forces a separate subnet for that, there's no way for clients on the 'WAN' (Master Router) to access clients on the TP network - that I can figure out at least.

Example

Client1---------------Wifi-------Master Router-------TP WAN Port-----TP Router----------------------------Client2
(192.168.0.?) (192.168.0.1) (192.168.1.1) 192.168.1.?

Client1 cannot access Client2 because the Master Router has no idea where Client 2 is (only the TP Router is accessible)
Client2 CAN access Client1 because the TP routes to the 192.168.0.* subnet correctly

This is kinda annoying but I've zero idea how to enable 'Master' clients to access 'TP' clients

Note: the common suggestion is to set this up with the 'Master' router connected to a TP 'LAN' port - all this seems to do is turn the TP Router into a switch, you lose ALL it's functionality (no Wifi, no Shared USB, no way to access the Admin etc. etc) so that's not a solution?

TIA!