If you purchased through Steam Please follow these instructions:
https://help.steampowered.com/en/faqs/view/726E-E811-168F-0D9E
If you purchased through Aimlabs.com, please follow these instructions:
- Log in at https://aimlabs.com/
- Click on your avatar in the top-right
- Click "Account Settings"
- On the left-pane, click "Subscription"
- Click "Update Subscription"
- Select "Cancel plan"
If you need any further assistance please let us know by clicking "Submit a request" above. Thanks for giving Aimlabs+ a try, and we hope to see you again in the future!