ICloud – Can’t find all features of iCloud Photo Sharing with non-Apple devices

There are multiple absolute and rate limits on iCloud photos. See this article for details:

• https://support.apple.com/en-us/HT202299

Currently, if I had to guess, you hit one of the 24 hour limits and need do nothing but wait for the time to pass:

Maximum combined number of photos and videos from all contributors per shared album, per hour: 1000
Maximum combined number of photos and videos from all contributors per shared album, per day: 10,000

However, if you continue to have issues or are getting multiple notifications like your screen shot indicates, there could be a fault in the waiting loop code and you'll want to reach out to AppleCare to have engineering look at your account in particular. That isn't quick, but in the end usually works well if you are patient.

I've never experienced a similar issue, but these 2 steps won't hurt:

• Make sure both your iPhone and the other member's iPhone have iCloud Photo Sharing AND iCloud Photo Library turned on.
• Make sure you have the same settings set up on your Mac/iPad if you use any.

Also, if your shared iCloud Photo Album has more than 5,000 photos, you will need to make a new album to continue sharing.

Here's a great site for everything related to iCloud Photo Library: https://tidbits.com/article/15584