Unable to import file | WordPress.org

I am trying to import a site into a new webhost. I have both the AIO WP Migration and the Unlimited Extension installed. However, I have been unable to Import. The ‘Browse’ button doesn’t upload the selected file, and the usual UI is different than what it looks like normally. A screenshot of what it looks like: https://ibb.co/n35f24R. What could be the problem?

Also note that the AIO logo doesn’t appear on the menu.

I have tried reinstalling WordPress, reinstalling the plugins and the same problem shows up. (Note: I have had success on other imports.)

Any suggestions appreciated.

 

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