VPN traffic dying at DMZ on remote side of the VPN

Hello,

So we are building a main and remote location. Main location wired public internet and remote site is using dual LTE.

There is one Machine connected at the Main location, a laptop.

At the remote site there is a cisco switch running three VLANs. The tunnel is meant to allow connection between the main site and remote site's VLAN1.

We have tried multiple times using the wizard and custom tunnels but we consistently see the same behavior. Traffic from the remote site completes to the main site connected laptop. Traffic from the main site laptop to the remote site is routed to the remote site forti and then fails into the DMZ. It does not route to the VLAN. We have tested this as well with a direct connected laptop to the fortigate internal switch and the same behavior is happening.

Notes:

Policies on both ends to allow traffic in and out from the local and remote subnets

VPNSSL address is created and not in conflict with either local or remote subnets

DMZ port is fully disabled on both sides.

Static route is in place on each side as well.