You could enable free trial period one time and for 3 Days for each domain that you have. Profitquery PRO options do not work for localhost websites (fro ex. https://localhost) or website which has domain address like an IP address (for ex. https://18.104.22.168)
Enable any pro options for choosing tools. We have 3 pro options read more about pro. Then click Activate on the plugin main page and click Start Free Trial. You will see a notification that your request successfully sent.
Then you need some wait 10-15 min (time to create for your domain pro filename which enable pro options).
If you have not already used the trial and your website have a real domain name you will receive a letter from Profitquery.
Please remember, that after free trial period will end some of your tools could be disabled if you use pro themes.