It is easier than ever to keep up to date with the latest Parse Server version and so ensure full compatibility between app and server version. All it takes is a single click on the Change Version option to upgrade or downgrade server versions.
In the last case showed above,you see that the last version was made effective,so if you want to downgrade to the version 2.2.14, you need to click on the circle
on the other hand,if you want to upgrade to the last version,you need to click on the circle
If you chose the version that you think is better, click on the green box
and click on OK