This is a pro plugin of Comment Mention WordPress plugin.

Here is the free plugin: https://wordpress.org/plugins/comment-mention/

Here is Pro plugin https://checkout.freemius.com/mode/dialog/plugin/10495/plan/17738/

Followings are added as a pro feature.

• Search by First/Last name while mentioned.
• Enable mentioning on Page comment.
• Go to wp-admin –> Comment Mention
• And you will see options to enable pro features https://prnt.sc/r5W2X4utYe3v

How Plugin Works https://www.youtube.com/watch?v=5rlIVRfpnPs