After create a portal and ignite it with lighter, I get nether portal blocks with wrong yaw as you can see in the picture:

Also the people teleport through the portal with the same yaw.

Thank you.

I thought (unless something has changed) those tiles were client side? I do know that the player's yaw is controllable based on the portal exit. If you require more control over pitch yaw and roll, check out Exact Destinations.

At a minimum, this issue doesn't really belong here (as I started with, I'm pretty sure it's not really a MV thing at all but probably another mod/server incompatibility or something) but probably belongs in MV-Portals. MV-NetherPortals simply allows linking/scaling of worlds.