New page not showing up in web bar

Here’s some general info about menus:

https://codex.www.ads-software.com/Appearance_Menus_Screen

But for more specific info on how your theme works, you’ll need to contact the developers — as commercial themes are not supported here.

Okay. Since my theme is from WooThemes, then I need to direct my question to WooThemes or WooCommerce, is this right?

Yep, they should be providing support – that’s really part of what you pay for with a commercial theme. But if you look at the article I posted, that might answer your question too.