Connecting card reader to ipad

I have a genuine Apple Card reader that connects to my iPad.
It suddenly does not want to see it. Why? Don’t know.
It has worked in the past.
I am now wondering if there is an app or program that I could load onto the iPad so that it would make live easier.
The camera I have is a Canon Powershot SX60HS. It used to be able to work with ‘camera connect’ on the iPad but that also has become a pain to do.