What should I do if the product doesn't appear in the product registration window after writing a post?

First question..

If you clicked Product Registration and searched for a product but it didn't show up...

What should I do?

Second question... (I'm not sure if it's just me...)

When I click Product Registration on my laptop... it doesn't move to the next screen and just the product registration window stays there... ㅠㅠ

It's stopped... just...

Am I the only one?? 😭