I have a Note 10+. It seems every since my latest update, a pop up keeps appearing that I cannot write on or delete pictures off of my SD card. Ive tried taking it out, restarting my phone and putting it in again. It lasts maybe 5 minutes before the pop up appears again. Says I need to back up my files? Any idea whats going on? Its a 128GB and only 80GB are used. Pictures and videos are half there as well. Help!