[Plugin: Better WP Security] Can't change user 1's ID

In the Better WP Security dashboard it says, “A user with id 1 still exists. Click here to change user 1’s ID.” But when I click to fix it and end up in the Admin User section, all it talks about is changing the Admin user name.

There is no need for me to change the name as it is not “Admin” from install.

How do I change user 1’s ID?

https://www.ads-software.com/extend/plugins/better-wp-security/