Why isn't my teaser page showing when opened from phone?

Hi, we are launching on the 27th and when I'm sharing the teaser link with my connections they can't find the teaser page when they open the link from their phone. It takes them to our product page showing our last launch. BTW, this is our second launch. Did anyone face the same? Is this a bug or is there a solution to this? Seeking advice from experienced hunters. Thanks in advance. P.S. The teaser page shows when the link is opened from a web browser. Our teaser link: https://www.producthunt.com/products/replymind