[Question] Valentines Tera Raid Event

[Sandslash Fan]

I logged onto the game last night and didn't find a 5-Star Fairy Tandemaus den. Is it not a guarantee to get one? I did do the lingering Greninja raid I had, before connecting to the Internet, so I am wondering if that registered my as doing the daily event?

 

[Devalue]

Just beat Greninja and connected to the Internet for the new event (and the Mystery Gifts). Found an event Fairy Tandemaus raid. Could be random.