Install Wet Okole Covers on Rear Jump Seat

I can't for the life of me figure out how to install my covers on my rear jump seat. Does anyone have any experience with this?

The photo is what mine seats look like, and their similar to the pic in the link below. However, I don't think it is possible to slip the fabric behind the top plastic plate, as their website shows.

Wet Okole Website Image

I am guessing that the hooks on the bottom connect to the LATCH restraints, but I am not sure.

I'll probably end up having to call them, but I thought I'd ask here, too.

 

I believe the plastic lifts out and off ... let me go look at mine.

 

Plastic putty knife ... insert gently at arrow points ... pry back gently ... pull away up and out gently ... presto

 

I really appreciate you going to the trouble to do that! Cheers, Mate!