Hello Frankgold,
Thank you for reaching out to Apple Support Communities. We are happy to help you!
We understand that you are unable to sync a photos album across your devices.
We have provided you with a few different informational articles:
Sync your photos manually using the Finder
Sync photos between your Mac and iPhone or iPad
"You can sync photos on your Mac to your device. You can sync all or a selection of photos from your Photos library on your Mac. For example, you can sync a selection of favorite albums or photos of people.
You can also sync photos from your Pictures folder or another folder that you organize to hold photos. For example, you can import photos from a camera into a folder in the Finder. You can organize your photos in multiple folders within a folder and sync the folders to a device.
Synced photos appear in the Photos app on your device."
My Photo Stream
There are certain formats that are compatible with Photo Stream, Please see below:
"Photo formats that you can use with My Photo Stream
My Photo Stream supports JPEG, TIFF, PNG, and most RAW photo formats. My Photo Stream doesn't support video or Live Photos."
We hope this finds you well!
Cheers!