SHOPIFY STORE SETUP - NEED HELP COMPLETING NAVIGATION & DOMAIN -- 2

SHOPIFY STORE SETUP - NEED HELP COMPLETING NAVIGATION & DOMAIN

I need an experienced Shopify developer to help complete my store setup. I've already created the foundation but need help with the final technical pieces.

What's Already Done:

Balance theme installed
MOODY logo uploaded to media library
Pages created: About Moody, Contact Us, FAQ, Custom T-Shirts
Menus created: Main Menu (with Home & Custom T-Shirts), Footer menu (with About, Contact, FAQ)
What Needs to Be Done:

Fix Header Navigation Menu

The header bar keeps disappearing when trying to configure it in the theme editor
Need to get the Main Menu (with Home and Custom T-Shirts links) displaying properly in the header navigation
Ensure the menu is visible and functional on all pages
Add & Resize MOODY Logo

Add the MOODY logo from media library to either the header or hero section
Resize it appropriately so it looks professional (not too large)
Fix Domain Connection

Domain: moodyapparel.online (managed through Network Solutions)
www.moodyapparel.online is pointing correctly to Shopify
moodyapparel.online (root domain without www) is connected to a different store - needs to be connected to MY store
Ensure both versions of the domain work properly
Store Details:

Store: Moody apparel (zmyr8i-s1.myshopify.com)
Theme: Balance
Domain provider: Network Solutions
Timeline: ASAP - ideally within 24-48 hours