Site-To-Site VPN on OVH

Hello. I want to have a Dedicated Application Server (Running Windows 2016) and have multiple remote offices connect to it using a Site-To-Site VPN. I see this was possible before, see here:

https://www.ovh.com/world/g1555.vpn_configuration_guide

But if you check the service you will see this error:
{ "message": "For now, we suspended the order of old beta VPN service. We are going to provide a next generation infra which will provide far better stability and performance. You can still contact us via mailing list vrack@ml.ovh.net. See you soon." }

So my question, is how can you create a site-to-site VPN now? My thinking was a VRack with a Linux Server running OpenVPN and put it on the private network to the Windows Server. Thoughts on this working at all? Bad performance?