2) Then decompress the folder by clicking it so it's selected and then right clicking it and hitting extract all, this should then create a folder that is not zipped.
3) If you are on Google Chrome go to chrome://extensions and if you are on Microsoft Edge go to edge://extensions as your URL.
4) Enable developer mode, on Chrome the slider is in the top right corner on Edge it's in the bottom left.
Developer Mode Enabled on Chrome
5) Click "Load Unpacked". On Chrome it's on the far left just below the title bar.
It is in a different location Edge.
6) Select the folder that has the decompressed version of CubedCraft dashboard in.
7) The extension should now be loaded!
The extension loaded on Chrome
To test if the extension is loaded, select a player server on https://playerservers.com/account/. If you see a "Scripts" section on the side bar is it loaded and running!
The extension successfully loaded!
If it is not loaded:
Make sure the extension is enabled
Press the reload button on the addon
Make sure you refresh https://playerservers.com as it needs to load afresh for the addon to come into effect.