The photo sender's name appears at the top right of the frame as new photos arrive on the frame. It is part of the notification feature on your Nixplay frame for new photos.
When the frame receives new photos, it shows a notification screen, then displays the photos received with the name of the sender at the top right.
The frame only displays the received photos with the sender's name once the first time. After the frame displays the notification once, it resumes the playlist it is playing. The new photos would now be at the end of that playlist and will play as normal, without the name.