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This is related to the recent spam floods. To keep this site usable at all some functionality needed to be disabled or reconfigured temporarily. I know the site team is working hard on improving things. I expect you should soon see improvements and a return of the normal functionality.
Regarding the Personable mission... did you also add a picture and make an avatar of it?
I'd noticed for a while some guy in Korea from the look of the content taking great delight playing with a script tool box.
Perhaps they should hold fire on the new missions until they add some sort of captcha based submission check other wise they'll get a lot of first timers not engaging in the behaviour they want.
I'd put a comment on their document myself but its locked