MikroTik as OpenVPN Client on Opnsense - no Traffic possible

Hi there,

im just trying to get a a VPN between a MikroTik LTE Device (wapLTE) and a Opnsense Firewall to working.
I set up a OpenVPN Server on the Opnsense Site and added a OpenVPN Client Interface to the MikroTik.
I have already a connection between the Mikrotik and the other side. On the Terminal from the MikroTik i can ping into the remote Subnet. But the connected Clients on the MikroTik cant reach the remote Subnet.

What i’m missing?