JT0987654321

I'm trying to create an invoice and just above the invoice number it lists a business name...my other business that I have no website for or any idea how Squarspace even has that name. I don't know if it's even possible to edit, but it's unusable as is.

When I receive or send an automated email from/through squarespace my email app, and that of some of my customers, has a picture/avatar/icon in the subject . I assume it's a picture of someone associated with squarespace. This is pretty annoying, is there any way to change the image?

I'm having the same issue but have zero idea how to do the coding change.