OPNSense <-IPSEC-> Mikortik works but no traffic

[guest17451]

Dears!
I'm trying to get an IPSec tunnel working betweek a HW Mkrtk and Software OPNsense.

The IPSec tunnel works ::), and both sides report the tunnel is active but I cannot get anything work under the tunnel.
No ping/http anytthing.

Can you please advise where to start what to check and/or some diagnostic steps?

Any helps appreciated.
Thx