If you want to delete your Reolink account and all account information, please refer to the following steps.
Step 1. Log in to your Reolink account at https://reolink.com/my-account/, and then go to Account Details -> Security page.
Account Details

Security Page

Step 2. ​Click I Want to Delete, then enter the password in box 1, check box 2, and click Delete My Account to proceed.

Delete My Account Option