@YvonneA - If you look a few posts above yours, someone else has had a very similar problem.
The IOSRA plugin support and development is in a bit of a limbo, because the owner of this thread seems to have disappeared. Therefore there is no official support for the iPad Mini 3, but help is at hand, because there is an unofficial version here
https://www.mobileread.com/forums/sho...&postcount=342 which should work with your new IPad.