I have been sharing my albums with others for a long time. All of a sudden all my shared albums, past and current are reading "album no longer shared" I am the owner of the albums. How do I make sure they can still be shared with others?

Greetings Terregirl, 

You’ve mentioned that this is happening with pre-existing shared albums, have you tried sharing a newly created album to see if the same thing happens? If not, please do that now. How to use Shared Albums in Photos on your iPhone, iPad, and Mac 

Before you begin

1. Update your iPhone, iPad, or iPod touch to the latest iOS or iPadOS, your Mac to the latest macOS, and your Apple TV 4K or Apple TV HD to the latest tvOS. If you have a Windows PC, update to Windows 10 or later and download iCloud for Windows.

2. Set up iCloud on all of your devices.

3. Make sure that you’re signed in to iCloud with the same Apple ID on all of your devices that you want to use with Shared Albums.

Turn on Shared Albums

• On your iPhone, iPad, or iPod touch, go to Settings > [your name] > iCloud > Photos, then turn on Shared Albums.

Create a new shared album

1. Go to the Albums tab and tap the Add button.

2. Tap New Shared Album.

3. Give the shared album a name, then tap Next.

4. Choose people to invite from your contacts, or type an email address or iMessage phone number.

5. Tap Create.

Thanks.