So... How do i configure site-to-peer wireguard on er8411 in combination with oc200. 

The interface has changed in oc200. 

The path:

Settings > VPN > WireGuard.

no longer exist. 

https://community.tp-link.com/en/business/forum/topic/620506?moduleId=794

any ideas?

site-to-site is possible.

Seems like site-to-peer has been removed or hidden at least.

Thanks.

AntonV