I can't get any of my photos to load

If you have the preferences for local storage options unchecked, then it should not make a difference – see image below. If you have already been running overnight I would suggest contacting Adobe directly who can check out your account at the back end to see why sync is stuck. Use the link bellow.

This is a user to user community. For some issues it will be necessary to contact Adobe directly. Click the following link and scroll down the page to Individual. Then click “Sign in to contact us” It should be possible to start an on-line chat with Adobe Support.
https://helpx.adobe.com/support.html

If you have performed a re-installation you may need to leave the app running overnight for sync to complete. It will take longer if you are also storing originals locally.

Thanks for the info. I see you are using the new Lightroom 3 on Mac OS Mojave

If you click on the cloud icon (top-right) does it show any sync issues.

You can also check your photos stored in the cloud by logging-in to your web app using a browser.

https://lightroom.adobe.com/

It will help us to answer your question if you could provide the exact version number you have installed and details of your operating system e.g.
• Windows 10 v1809, MacOS Mojave (10.14) Catalina (10.15)
• Adobe Photoshop Version: 20.0.6 20190724.r.80 2019/07/24
You can find this from your application menu:
Help >> System Info