I am trying to file an extension through Turbo Tax but it won't allow me to leave my wife ITIN blank. What can be done about that?

I don't expect to own them, I do donations plus I was in FMLA for two months. So I expect the opposite. Is June 15th when filling from the outside? I expect to ...

Can I do all of this on October if I file for a tax extension? I am not sure I can get the certified proof of identity and mail it before the 15th.