Hey there @Geemboscapa, 

you can find all your answers on this article: 

Hello, 

i had song Passenger- Let Her go on my favorite tracks over many years, but I noticed that for long time it’s missing, I can see it on my playlist but the song is gray and I can’t play it. Is there a soliton for this or is the song not available on deezer anymore?

Hi @Sofija Trujic !

If song is greyed, is no longer available in your country and for some reason is removed from Deezer . With two arrows you can replace song with other if is replacement there (sometimes you can't) .

Select name of song ( MELO DE … ) tap Replace

How can i find missing song.

If is greyed , then you can replace song with other same song from other album ( if is available ), but if is missing you can't find it.