But, never fear! It's a very easy solution!
First, you need to be using either Google Chrome or Mozilla Firefox as the browser.
Then, while you are in the admin panel for your webstore, look up in your web address bar. There will an icon to the left of the URL, and it will look like this:
Left click on the icon, and a drop-down menu will open. It will have an option for Flash.
Click on the option for Flash on the right and another dropdown will open. Click on the option for ALWAYS ALLOW ON THIS SITE:
You may need to close and restart your browser, but then you should be able to see the buttons on your admin panel.