Hello there, warmwishes. I understand your frustration. You can purge your company again as long as you are within the eligible timeframe. Please ensure you follow the correct process to obtain a clean version this time. You can refer to this article: Delete your data and start over in QuickBooks Online.
Regarding your trial, avoid deleting your account or user ID. Your 30-day trial is a one-time offer associated with your specific email address. If you delete your account, you won’t be able to restart a new trial with the same email.
Feel free to reply below if you have follow-up questions.