OpenVPN SSL VPN Configuration gives error: Unsported Options "route delay 4"

Since Sophos XG is depended on OpenVPN for many clients, we only use it for all: (Recommended, since no support.)

Since openvpn-connect-  or 3.4, i get the error "Unsported Options" and i cant connect.

So i removed after looking at the log, the options "route delay 4", what does it do? Is it important?

I tried to reach out for the support, but you get the classic "not our product, not our problem" answer. Maybe someone can it explain it me, but is this a bug from openvpn or does sophos not support the new configuration rules for newer version?

And is there a permanent fix, which does not get whiped after a update?

Edited TAGs
[edited by: Erick Jan at 1:29 PM (GMT -7) on 31 Jul 2023]