The error message you’re seeing suggests that you’ve reached the maximum number of tokens or rate limit allowed by your current Ubidots plan. If you need more tokens or a higher rate limit than your current plan allows, consider upgrading to a higher tier plan. The Industrial license and above offer custom API rate limits.
Please take a moment to explore the following link to learn more about our Plans. Ubidots pricing — View our features and flexible plans
Note: Remember, when creating a new token, the rate limit option will be greyed out if you’re on a plan that doesn’t support custom rate limits. In such cases, tokens will have a fixed rate limit (for example, 4 requests per second for device tokens).