Aligning Social Media & Slider On Mobile

Hi,

Great theme, but having trouble with 3 things:

1. Social media icons are not centered on my mobile device (iPhone) and I need them to be. It won’t let me attach two images…so the social media icons are too far left and not centered like how my logo, phone number and menu icon are.

2. There is quite a lot of white space between the menu and slider on my mobile device that I need to remove. Pic attached.

3. Instagram widget does not work. I have never seen an Instagram widget that just requests your username and not gain an API key etc, so how can I get it to work?

Thanks