Oxygen 2.2.1 is a minor update which fixes four bugs introduced in Oxygen 2.2.
Fixes include:
If you used a plugin with Oxygen that worked in 2.1.2 or earlier versions, but broke in 2.2, it should work again in Oxygen 2.2.1.
Oxygen 2.2.1 is available as an in-place update via the Plugins page in your WordPress admin panel, or you can download it directly from the customer portal.