And it won't come back.
Have you had this problem on your blog too?
Mr Blogger, may we please have this gadget back?
Frustrated. Sorry to all my international readers. Hopefully an answer will not be far off.
From what I’ve been reading when you make any updates to your blog page (by layout or design) the translate gadget disappears.
Apparently this is because Blogger now allow you to set your blog to the language you want to read it in, and when you go to other blogs ‘Blogger recognises’ that it must change the language to the same as your blog for you to read. Um, I think not.
Hope they get this sorted.