Account locks and limits

We’re starting to use for our production system. We’re leveraging machines heavily. Is there any blocks I need to be aware of? E.g., today, I ran into an error

Your account has been marked as high risk. Please go to to verify your account.

Could you make sure our account is not flagged? Do we need to be aware of anything to reduce risks? Thanks

ps. We’re using machines by spawning them with random names and deleting them after they did their work. When will they be removed completely from our account and how long are logs accessible?