This free plugin presents a login window right inside Oxygen Builder when the WordPress session expires, to avoid losing your work because of the infamous Oxygen “Error 200” while saving. How do I know if it’s working? Easy: 1 – Open Oxygen Builder 2 – Using a different browser tab, log-out from WordPress Normally, doing this would make you lose any change made in the Oxygen Builder tab. Logging back in using a different browser tab doesn’t help, all unsaved changes in Oxygen Builder will be lost. But if you have OXY Re-Login Window active, your Oxygen Builder tab will show a login window and your Oxygen Builder session key will be updated and you will be able to save your data and continue working. Why would someone log-out while having unsaved changes in Oxygen Builder? Sadly, it’s common that the WordPress session expires automatically while you are working inside Oxygen Builder.