Any way I can help, let me know 🙂  -Chad

I will think about it.

You deleted site admin? I think you have to create page again as after deleting user the page created by previous user is gone as well.

It can be achieved. Have a look at ask form source code and you can get idea how AnsPress process upload. As I remember I have answered before to allow custom file type, please search.

Yes, answer link is wrong here. This will be fixed.

Our site is using older version of AnsPress. Newer version have feed in user page. You can see activities of users and taxonomy you follow in feed page.