Tracey Cox edge cup stamina stroker

Hi, our Tracey Cox stroker arrived yesterday, we couldn't wait to try it out, it worked great so I am told!

Anyway to the point. After use I sprayed it with toy cleaner, then rinsed it through with warm water and then left it on a towel on the window sill to dry. When I checked on it this morning it's as if the top layer has started to split in certain areas.

I have contacted customer service for advice and they've kindly offered to send us a replacement. However now I'm wondering how I should clean it? Did I do something wrong? We also own the Doc Johnson UR3 mood exciter which is similar material, I clean this the same and it's fine.

Any advice will be very appreciated!