Joseph KaplerChristopher. I had similar issues as well. First, ensure you are editing the theme. Once there, simply click the links; you may need to click a couple of times to access the actual link, and it will open in the sidebar. You will see each link: Home, About, etc., click it, and you will see a window open where you can type in the link.
To change the phone number, click it a few times until you see your text cursor. Highlight the text you wish to change and enter the new phone number.
It’s the same concept for the Footer. Ensure you are in theme Edit mode, click a few times on the Icon to change the address you wish to add (i.e., Facebook address linking to your profile). When you click the icon, a window will open where you can enter the link.z
If you want to change an Icon, such as delete one and replace it with another, first click the icon and press backspace. You may need to click the Icon twice. To replace it, on the left side bar, click the plus to add an object, scroll down to the embedded section, and you will find additional social media icons, such as LinkedIn. Click and drag it to the Icon’s list and add it.
Hopefully, that will help you until you get an answer to the rest of your question. feel free to email me if you need more help with the header and footer.
Joe Kapler