Forza Gallery

So i know i have photos from fh2, fh3, fh4, and motorsports 7, but when i access my gallery on this website, it’s only pulling up fh4 photo’s and is prompted on top of my screen "My gamertag Forza Horizon 4 gallery, is there a way I can change it?

No, unfortunately not. it is hit or miss and it only works when it feels like it. And there is no way to change it, you can only wait.