Menu are gone wrong  

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I don't see any broken things. If you saying "everything" means the menu padding issue, then please register some user and leave login/pass here to allow me check it. That menu is not available for guests. I need to login to see, you registration form is too large. I set this topic private.

I don't see any problem. As you can see the menu is designed that way and the sub-menu is wider than the parent menu, because it takes the maximum wide of menus and you can see the "Subscriptions" sub-menu makes it wider. All is correct and nothing is broken :

In any case if you want them have equal width you can use this CSS code. Put it in Forums > Settings > Styles > Custom CSS code textarea, save, delete all caches, go to forum front-end and press Ctrl+F5 to reset browser cache:

#wpforo-wrap #wpforo-menu li.menu-item.menu-item-82{width: 126px; }

This will increase the parent menu to sub0menu width:

I didn't find other issues. If you have some please leave some screenshot.

but i dont know what is this for....

it show up in the middle of forum.