I wrote a site for someone during 2022 which had html links to various of the photo albums on his business FB page. It still works using Chrome on Windows 10 on a laptop but now the links do not work properly on various mobile platforms. On Android instead of going to the correct photo album page they go to my FB home page On IOS they initially come up with an invalid link message but then go to the correct page

I am assuming FB have changed the way this works but can anybody advise how to resolve this.

All the pages are set to Public.

The code I am using is in this format:

/?set=a.3237888776447394&type=3

Thank you