Shared Album

Hi,

I've tried to open a shard Album,

When I invited someone to the Album when she click on the 'accept invitation' she get "This photo album is no longer shared." even though Ididnt delete the Album, further I have someone else who she is connected to the Album.

I've tried to open another Album (New one) and she got the same message.

We have iPhone 6 and the invited has iPhone 5S.

Please advise!

Thank you.