@AntonV 

Hello,

I’m seeing the same issue with an ER8411 V1 adopted by an OC200.

My current versions are:

ER8411 V1: 1.3.6 Build 20251028 Rel.12399
OC200: 1.40.18 Build 20260506 Rel.74003

WireGuard was available before, but after updating to the latest stable firmware/controller combination, the WireGuard option is no longer visible under VPN. I have checked the VPN menu, site settings, and controller view, but I cannot find the WireGuard server/client configuration anymore.

Since the ER8411 supports WireGuard and I have used it previously, this looks like a firmware/controller compatibility issue or a UI bug, not a missing feature.

Could TP-Link please confirm:

1. Is WireGuard currently supported on ER8411 V1 firmware 1.3.6 with OC200 1.40.18?

2. Is there a known issue where WireGuard disappears after updating the OC200/controller?

3. Is there a workaround, beta firmware, downgrade path, or controller version required to restore WireGuard?

4. Should WireGuard appear under the legacy VPN page or the newer reorganized VPN page?

I would appreciate confirmation from TP-Link support, because WireGuard is an important feature for secure remote access and lab/enterprise testing.

Thank you.