Hey,
I have the problem that I installed Virtualizor for OpenVZ virtualization on Debian 9 but I get this error "You have booted into the wrong kernel - 4.9.0-3-amd64.Please reboot into the correct kernel."... Unfortunately I didn't find a way the solve it or a real support article about this. I had the same problem in Debian 8 and 7. Can someone help me please?