Songs not available and don't download

Active family subscription, Russian market

A week ago some songs couldn't be played when I clicked on them (grey "item not available"). However when I play a previous track it's possible to scroll to a "grey" one and it will play. I started deleting all grey songs and found out that couldn't download them from same albums in the store. The only option is to pick them from some other album or a compilation mix. Unfortunately many tracks are recorded only in one album and now can't be downloaded again. How to fix that?

Thanks in advance