User & Comment Mentioning Back

Hello,

I have two questions about the plugin:
User & How Mentioning

1) the notification email sent when the user is mentioned is that of the site administrator and not a “no-reply” email. How to change this?

2) When a user is mentioned, the link to his profile does not work, for information I use ultimate member, and it is well integrated (the link to the profile works well at the level of the author of the comment). But when a user is mentioned, the link of the mentioned user goes back to the home page of the site.
How can UM also be integrated in the mentions?

Thank you for your help.