Hi Deriv Community! 
Have you received any of the error messages above? If the answer is yes, this means that you have set a self-exclusion on your account. The error messages include:
1. You have exceeded your daily/7-day/30-day limit on losses
2. Purchasing this contract will cause you to exceed your daily/7-day/30-day turnover limit
If you have set self-exclusion on your account, it stops your Dbot from running. The self-exclusion help to limit your trading activities should you need them. If you would like to know more about the self-exclusion, you may refer to this post in Deriv Community: Self Exclusion Tool
To remove these limits, you would need to remove the self-exclusion in your settings. Prior to removing it, you would need to acknowledge that you are fully responsible for your actions, and we are not liable for any addiction or loss.
You may also refer to this post on how to control losses on Dbot:
https://community.deriv.com/t/how-do-i-control-my-losses-with-dbot/139
If you have any questions, please visit our Help Centre or contact us via Live Chat and WhatsApp.