Unable to register Belkin Ultraglass for iPhone 13 /13 Pro

Hello,

I bought two ultra glass screen protectors for two iPhone 13 Pros in store where it was applied by an Apple employee. I have tried multiple times to register the product but have been unsuccessful. Belkin doesn’t have the product for the iPhone 13 listed as an option, so you can’t activate the warranty. I have also emailed Belkin with no response.

Has anyone been successful with registering the screen protector? I’m not sure what I can do.