I recently upgraded to the S21 from my S7. My daughter still has an S7. Before the upgrade I had no problem sending a picture attachment to her by text message. Since I've got the S21 I can send it but when she receives it it shows up canceled. She doesn't have a problem receiving pictures from anyone else, and I don't have a problem sending pictures to anyone else. Also I have no problem sending her a picture attachment on messenger. Any ideas?