well, that's the policy of the hoster. They provide a Preinstallation Environment recovery system, booted over the network and then you are free to recover your system youself. Actually it's enough to do so - using DISM and some hand magic. The problem here is that all backup is done manually, as you can't do that online (that's why I wanted to use VEB). But, with VEB I'm not able to restore the image in case of failure.
Theoretically I can imagine idea to restore the VEB backup on a local machine with the official Recovery media, and then make a WIM file from it and then transfer it to the server, then load their Recovery system and deploy at the end this WIM. But you see how complex and time consuming this task becomes.
So, a separate restore executable or .VBK/.VIB to .WIm converter would be nice feature. However I fully understand that it has a very low priority for you.
Anyway thank you (Veeam I mean
for a nice free tool that I can use at home. At least now I have a decent and legal backup.