Belkin Invisiglass Chipped Off

Hello,

I recently bought a Belkin Invisiglass Screen protector at one of the iStores in the US.

Today, I noticed the screen was chipped off - not much, but enough to make me fee uncomfortable (note: I didn’t drop my iPhone). I remember 5he salesman told me something about the warranty of the screen, so now I’m wondering whether I can go there again and get my screen changed (preferably for free:))

Is it possible to do so in Europe as well?

Thank you for your help and have a good one...