Secuni interview questions

Interview was through phone. I have not met anyone yet, but everything is being done through phone and email. I have yet to meet someone in person. They do have a website, and an address. At one point the HR manager sent me an email with a “Employment offer” sheet and said if I couldn’t fill it in through the email I can meet with her in the morning. Idk but it’s starting to sound a bit sketchy.