Hi chaunce322,
Welcome to Affinity Forums Affinity Designer and Photo need to have read and write permission to import/export/save from/to Apple Photos. To give Affinity Photo or Designer permission/access to Apple Photos, run the application, click the plus icon in the Welcome Screen and select Import from Photos. Affinity should ask for permission to access your photos. Click OK to give it permission to access your Photos library. You should then be able to import/export/save from/to Apple Photos.
