Hi hncvj ,
Thank you very much for your post.
Yes, the official WC Subscriptions are compatible.
No, we do not support any Vendor plugin. Unfortunately, there is nothing we can do about this. YOu will need to find a developer to make things work for you. However, this may be difficult as the developer would need to keep the work up to date with every change (one of the reasons we do not support 3rd party plugins).
Hope this helps.
Pavel