Firmware:380.57 - how to connect subnet ISP Router

[netguru]

Hi there,

Fritzbox 7360 DSL-Router
192.168.178.1
Static Route to Asus: Gateway 192.168.178.7, Netzwerk 192.168.0.0, 255.255.255.0

Asus RT87U Merlin Firmware per WAN Port toFritzbox
WAN:
IP 192.168.178.7
Gateway 192.168.178.1
Subnetz 255.255.255.0
LAN :
IP 192.168.0.1
Subnetz 255.255.255.0
VPN IP 46.20.33.xxx , ect VPN network from provider 10.33.xxx.xxx

VPN policy Rules

The Router is able to ping the ISP Router (Fritzbox), but the clients are not?
I think there is missing the route from asus vpn to ISP Router and the route to the ISP in generell?