I am able to upload my logo but it will not let me save it. Can anyone help?

I've replicated this on my end and I was able to upload and save the company logo, steven3.

Let's perform a few troubleshooting steps to check if this is a browser-related concern.

You can use a private window and see if you're able to upload and save your company logo. If you do, go back to the original browser and clear the cache. Also, I'd recommend switching different browsers such as Google Chrome, Internet Explorer, or Mozilla Firefox.

If the same thing happens, I'd suggest contacting our Customer Care team. They can help you further in saving the uploaded logo in QBO. 

Here's how to contact them: 

1. Go to the Question mark icon.
2. Click Contact us.
3. Enter a brief description of your concern in the What can we help you with? field and click Let's talk.
4. Choose an option in reaching our support team.

Let me know if you have more concerns. I'd be around to help.