Asus AX-53U router - route to client LAN

[raaasz]

Hi,
I want to connent directly to plc which is connected to LAN on pc which is openvpn client

I set up openvpn server on my router ASUS AX-53U I can connect to this from my both computers, clients can see together (I can connect from my pc to ftp server on client 2). I try different ways but without success.
- I try add in router configuration alloved clients info about username and ip (I cant ping plc from pc to which is it connected)
- i try add route on my pc >route add 192.168.1.0 MASK 255.255.255.0 10.88.0.6

Additional info is in below link:
image of network
my router configuration
ovpn file (without certificates)

https://drive.google.com/drive/folders/1iuLaBPO_k_Pkq7xAkZ76a79ZoViIjXiU?usp=sharing

Can somebody tell me what I can try?

[raaasz]

Maybe another question:
It is possible?
Maybe it can be possible in other configuration (like opevVPN server installed on linux pc)
I read somewhere that maybe I must reconfigure firewall settings on windows client (author of this post not write what must be changed).