The message "Oops... The photo cannot be delivered right now, since all recipients are offline" indicates that your phone has no connection to your frame.
This is either caused by the frame being offline or by the phone having lost its friendship with the frame.
Make Sure That the Frame Is Online
The most common cause for this problem is that the frame (the recipient) is offline.
Make sure that the frame is turned on, and that the frame is successfully connected to the internet.
Here's a guide to check if the frame is in fact online: Is My Frame Online?
Connect Phone and Frame Again
If the frame has been confirmed to be online but the problem remains, please try to reconnect the phone and the frame again. This is done by simply adding the phone as a new friend.
Check out this quick guide here if needed: How to Add Friends
If you have any questions, encounter any problems, or discover a bug, please do not hesitate to get in touch with us! You can submit a ticket here, and we'll get back to you as soon as possible.