Maintenance for the week of September 22:
• NA megaservers for maintenance – September 22, 4:00AM EDT (8:00 UTC) - 10:00AM EDT (14:00 UTC)
• EU megaservers for maintenance – September 22, 8:00 UTC (4:00AM EDT) - 14:00 UTC (10:00AM EDT)
Sometimes it can remove some games from the library after a crash, rebuilding database, or replacing hd. Go under ps4 settings, account management, and select restore licenses. In the same menu there is also activate as your primary ps4 option. Hopefully it works out for you.