VPN Communication Issues

I have a VPN setup between 2 sites.
Main Site 192.168.5.1
Remote site 192.168.27.1

from the remote site I can ping and remote into devices at the main.
I can not remote into or ping anything at the remote site from the main network.

I can ping devices at the remote site from the peplink under settings>Ping.

What am i missing?

Thanks