Dear Apple Suuport Comunity, when i connected my ipod nano (5th gen) to my hp computer, itunes synced MY WHOLE MUSIC LIBARY AND DELETED OTHER SONGS FROM MY IPOD. Now, i'm trying to manually add songs and itunes isn't letting me for some reason.

Dear Apple Suuport Comunity, when i connected my ipod nano (5th gen) to my hp computer, itunes synced MY WHOLE MUSIC LIBARY AND DELETED OTHER SONGS FROM MY IPOD. Now, i'm trying to manually add songs and delete other ones that i don't need, but itunes isn't letting me do that for some reason. I checked the "mannually manage music and videos" in the tab "music" BUT THAT DIDN'T HELP AT ALL. Usually hen i connected my ipod, i would be able to see all my playlists on the left side, but now there's nothing exept for my ipod. I have no idea what to do. Please Help. 😢