Settings Button Change

xkit-extension:

A recent Tumblr change broke the XKit button on the header. It’s now fixed, and button should appear after XKit updates itself.

This is where I would recommend a Update All from the XKit Control Panel, but since it’s inaccessible right now, unfortunately the only solution is to wait for XKit to update itself.

This might take somewhere between a few minutes to an hour, depending on the last time your XKit checked for updates.