How to set v2ray as the default on v0.63 and configure it on the VPS — documentation is missing.

[Aquariomel]

Could you please explain how to set v2ray as the default instead of Shadowsocks on version 0.63? I couldn’t find any clear guidance in the documentation or in the settings — it’s unclear how to attach interfaces and how to connect v2ray.
Also, how should v2ray be installed on the VPS? Your auto-install script reports:
“No working domain detected, not able to generate certificate for v2ray. You can set VPS_DOMAIN to a working domain if you want a certificate.”
—but there is no clear documentation about this. I kindly ask you to provide more detailed steps than just “go there, check a box and done.” I’ve read the Q&A threads and I’m not the only one who asked this, but unfortunately those topics remained unanswered. I’m really looking forward to your feedback.

[Ysurac]

VPS_DOMAIN is not required, it only a auto generated certificate instead of let's encrypt.
Interface configuration and proxy selection is done in System->OpenMPTCProuter, "Wizard" tab. For proxy it's in "advanced settings" checkbox. But you should try XRay instead of V2Ray.

[Aquariomel]

Sorry, but I don’t see any switches for v2ray/Xray in the interface.
The most I found is: ‘You can enable MPTCP over VPN if your provider filters Multipath TCP.’ After that, WireGuard interfaces appeared for each WAN where I checked the box.

[Ysurac]

[Aquariomel]

You won’t believe it - I clicked that checkbox several times, but I never saw the ‘Proxy Setting’ section. I went back to double-check just now, and it really does have all those settings 😂
Thank you very much for such a quick and informative reply ❤️