So, when you use the credits, you ask for them back when you submit the lesson and you get them back. How lng does that take. I dont want to run out and have to either buy more or wait for a day if I am trying to develop or learn. Per the credit refresh instructions, it asks you not to submit if you have more than a 100. I think I blew 800 or so on the first exercise. I feel like I am missing a page or email on how the credits work for the Cohorts. If each one is a thousand, you need to start at least each lesson with a thousand credits.