Yesterday I created a shared album on iCloud and successfully used it to build a family album with my brother. I cannot see the album on my phone or on my MacBook. "Shared Albums" is switched on in the Photos app on both platforms. I have tried toggling it off and on again. I've updated iOS on my phone. And I've restarted my MacBook. I can see older shared albums on both platforms but not the new one.
Very keen to get this sorted. All advice welcome.