Musicolet issue

[Darnell Jacobs]

I have this issue where I cant see added mp3s in musicolet. I dragged and dropped them into the music folder of the oneplus 9 pro in the file manager. When i opened musicolet i can only see 3 first files i added the first time. I cant see newly added files. I searched google and youtube for answers but i cant find anything. can someone help