Where did my energy bolts go that I didn’t use yesterday?

If you had less energy than 110, then energy only automatically refills to 110. (Or if you have the extended energy bar, the cap is 150). But if you added energy beyond a full bar (i.e. from star boxes, character puzzles, lounge drinks) such that your energy was above the cap, then it should have remained over the cap. You can try to contact customer support through the "help" button in the game settings, but I hear they are swamped and days behind.

Uh-oh. How many did you have yesterday?