Tap on the Treasure Chest Icon on the stage select screen. There is a timer counting down to when the log-in bonus can next be collected.
Daily Bonus Rewards
Day 1 [1 Item] - 50x 💎 | 30 min Time Limit [Fire Booster]
Day 2 [3 Items] - 75x 💎 | 30 min Time Limit [Lightning Booster] | 1x Undo | 2x Spiny Balls
Day 3 [3 Items] - 100x 💎 | 30 min Time Limit [Earthquake Booster] | 3x Laser Props | 3x Clear Lines
Day 4 [1 Item] - 150x 💎 | 2x +20 Balls,
Day 5 [1 Item] - 100x 💎 | 2x Spiny Balls
Day 6 [3 Items] - 200x 💎 | 3x +20 Balls, 3x Laser Props, 1x Undo
Day 7 [4 Items] - 250x 💎 | 2x Spiny Balls, 3x Blockers, 5x Laser Props, 5x Clear Line