Oh yeah that's a really good point. If you didn't have an account back in December/January to get the mobile campaign rewards, you can get them now. You get:

- 6* Colchicum
- 6* Gacha Ticket
- 5* Gacha Ticket
- 65(00) Flower Gems

Everyone also gets the HTML rewards,
- 5*+ Ticket
- 25 Stamina Pots
- 5 Free Premium Gacha Rolls everyday for 14 days (June 24 ~ July 8)