Hey Alexander,
Thank you for all of the kind words! 😀
To answer your questions about the email sender, this is the default behavior of WordPress’ wp_mail() function.
Please read about this function here → https://codex.wordpress.org/Function_Reference/wp_mail
If you notice the first paragraph, it describes what you see:
The default sender name is “WordPress” and the default sender email address is [email protected]. These may be changed by including a header.
So changing the header and the “From” email would take some code customization; we’re not able to help with code customizations but I hope this information is clear and helpful nonetheless 🙂
Cheers!
George