VehicleManager component support

Hello, i let the guests to book the vehicles for Rent Request but when someone make a Rent Request the email that vehicle manager sends to the owner writes User anonymous has submitted a Rent Request for:
This happens because the guest writes in the booking form the name but the email send the username as it put as
User {username} has submitted a Rent Request for:
and i want to change it to
User {user_name} has submitted a Rent Request for:
Where can i change it?

Hello

This is created special. With this you see, Person who send request, is registered or not.

If this important for you
We may propose to you order this as "customization service".
Please write to OrdaSoft contact form (ordasoft.com/contact-us-form) with full details description, how all must look and work, and we will give to you quota.

Best Regards,
OrdaSoft team