I purchased a streak freeze with my lingots cuz I had a super long day at work and didn't feel up to a lesson and it didn't work! Why didn't it work!? that's enough to make me not want to practice at all anymore I was on such a roll!
Don't give up! Assuming that you've only missed one day, send a note to "SUPPORT" and let them know what happened. They have helped a few people with this, so they might be able to restore it for you if you continue your practice today. Good luck!