Yes, here the same,
Last few days changes are not being recorded.
Did somebody find a fix?
Anyone have a solution? I tried deactivating all of my other plugins to see if there was a conflict with another plugin but no fix there.
Finally, I fixed it changing my theme (to twenty fourteen), modifing SEO info and returning to my previous theme. It seems that doing it, the SEO info get unclocked somehow.
I had to do it with all of my pages and posts but now everything looks ok.
Inakiram, thanks for your feedback! I just installed the WordPress SEO 1.5.3 update and still no go.