How do I get the “Add to my photos” button back?

You can store no more than 10,000 photos in your Saved photos album. To save more, you might need to delete some photos or move them to other albums.

You can use this app to help you do that: vk.com/app3231070. Please note that this was created by third-party developers, so if you have any questions about the app, please contact them.
Your search for returned no results.
Try using other keywords, e.g.: "delete profile", "create chat".
Check your request for misprints.