LSAT practice test answers don't save

I took my diagnostic without this issue, but for my first practice test none of the answers saved. I noticed this half way through the first section and just started over.

In order to get the answers to save I had to -- select the answer and click save (or whatever that button was to move on). I'd then have to go BACK to that question re-select it and click save again and move forward.

This obviously takes time away from the test and is annoying and distracting when you have to do this for every question in every section... Is there anything I can do to fix this?

I've searched for answers and can't find much.

Thanks!