Blender 2.8 has yet to notify the add-on developers to make it compatible with 2.8. Currently, no or very few Add-ons work
If you see a message stating "Upgrade to 2.8x required" it means the addon was made for this releaseolder versions of Blender 2. The release day7x and does not work for newer versions.
Unfortunately there is very little you can do as a user to fix it.
Check the betaauthor website for an newer updated version has been notified, checkor ask the websitedeveloper for an update. Most addons require small changes to adapt and can be easily updated.
LinkIf it is a commercial addon you payed for try contacting support for an update. It is often in the best interest of the owners to make it work in the site : https://code.blender.org/2018/06/beyond-the-code-quest/latest release.
Otherwise roll up your sleeves, learn Python, and update the addon yourself by coding in the required changes in. Most addons require only small adjustments.
