All accounts are limited as to how many transactions they can make within certain period of time. If you find your account to be limited, you may be hitting a daily, weekly or monthly limit.
If you find you have met your limit, you can either try again at a later time or increase your spending limit at http://chaturbate.com/tipping/purchase_tokens/increase_limits/
If you find you have met your limit, you can either try again at a later time or increase your spending limit at http://chaturbate.com/tipping/purchase_tokens/increase_limits/