User Sync: Deleted users not unsubscribing

Hello,

I just installed Mailchimp for WordPress and Mailchimp User Sync today. The creation of users from my site’s registration and existing users works flawlessly and shows created by API. When I delete a user from my system, the user’s account in mailchimp does not get deleted/unsubscribed. I’ve tested this with users that existed prior to installing the plugins and users created after installing the plugins. No difference.

Software versions:
Mailchimp for WP: 4.5.1
User Sync: 1.7.6
Wordpress: 5.1.1
PHP: 7.0.31

Mailchimp account created today as well.

Thank you,
Ryan