Can't change the monitor my game displays on

Hi,

I tried looking for a fix for this issue here but the results are not good for me. I'd like to launch wow on my secondary monitor and there isn't that option in the game config menu.
I tried switching between monitors using windows key + alt + arrow key but since my secondary monitor is larger than my main one (and I can't put the secondary one as my main so that workaround doesn't work) the game ends up taking only 2/3 on the screen and isn't even centered so it's less than ideal...

Is there a way to change what monitor the game launches to? Maybe in the config.txt or directly in the shortcut? By adding a destination monitor for example?