[Wordpress issuses] ladybluerose on "Add Media Not Working in Firefox"

I'm teaching my WordPress college course and have about 15 out of 22 students who are unable to get the Add Media button to work when they click it. It works on Chrome but not Firefox.

This came up on Tuesday and it still is causing problems today (thursday). Ideas other than switching to Chrome?

Thanks,

Lorelle

The blog I need help with is lorelle.wordpress.com.

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