Issue with promotional pop up, can you check it if it pops up please when you visit my page?

Site URL: http://www.cobbledstreetshop.co.uk

Hi, I've been having issues where my promotional pop up is being inconsistent. I don't know if it's just because i'm testing it out on my laptop, etc.  but I would appreciate it if someone could test it from their end esp. as i've just upgraded the website and wondered if it was worth it? 

I'd appreciate any responses! Thank you for your time 🙂 

It popped up for me.