HA does not work

What is not working? You need to be a bit more verbal to expect some help.

What do you try to accomplish?
What do you expect to happen?
what does actually happen?
 
Have you tested that fencing works? If fencing does not work no VM will be relocated what so ever.

For HA to work you also need shared storage. Do you have that?

Paste content of /etc/pve/storage.cfg
 
Have you tested that fencing works? If fencing does not work no VM will be relocated what so ever.

For HA to work you also need shared storage. Do you have that?

Paste content of /etc/pve/storage.cfg

I have them connected via iSCSI to three NAS.

Regards