Trouble with <private server> legion server

[bob]

Hiya guys, so I just decided to start multiboxing in WoW but I cannot afford to pay for 5 accounts on the regular servers so I downloaded a private server. Here is the link. <ummm No, there is no link to be had here>. So the issue I am having is I can log in without isboxer and stay logged in but as soon as i log in using isboxer and log fully into the game it gives me a error with WoW-64 launcher. I've tried every step mentioned in the guide by <private server provider> but nothing has worked. Has anyone played on this server and ran into this issue and resolved it? Thanks!

[bob]

So, keep your advertising to a different forum.
As for your problem. If you have fully logged into the game, what does it matter?

The first port of call for any issue like this is a compatibility diagnostic. A copy of the error message and any detail it provides might also be handy.