Do this if the notification is missing from your Notification Center. If you see the shared album invitation in your Notification Center, you can simply tap it to accept the invite.
This method is useful once you’ve been invited to a shared album. Accept the invite, then you’ll be able to see the album.
This method works on iPad and iPod touch as well as iPhone. If you’re on a Mac, open the Photos app, then open Preferences > iCloud > Shared Albums.
If your iPhone is older than iOS 11, then you can skip this step.
Use this method if you already have an album with pictures that you want to share. If you don’t have one already, you’ll need to create a new one.
You can also follow these steps to add other pictures to your shared album.
Use this method if you don’t have an album that you want to share.
If you’re not sure what their information is, but they are in Contacts, tap + to open the Contacts app. To add pictures to this album, tap the + tile and then tap to select photos from your photo gallery. Add more people to your shared album by tapping the person with a + icon in the upper right corner of your screen. Share your photos with people without iCloud by going to the People tab in your shared album and tapping “Public Website. " Your photos will share to a public website so your friends without iCloud can see them.