If you are on the free plan, we allow you to run unlimited tests against open source projects, and 100 tests against private projects a month.
If you have reached your limit, you may want to choose a plan in order to continue being able to run tests.
If you are on a paid plan you will get additional private tests per month, but you may still find that you are using up all the private tests. If this is the case then we will charge you for overage (charged at $1 per test). You can opt out of being charged for overage by clicking on 'Settings' and then 'Billing'.
If you decide to disable overage, then tests will immediately stop running once you reach your limits.