fraudulent entity?

I have been contacted repeatedly by [email protected] offering me fundraising marketing services. they also sent me a contract through upwork under the name Adepoju Blessing Adeola. They are convincing and if this is a legitimate associate I would work with them. However, if the 'backernation' part of their email is deceptive, I need to know and warn other creators of the issue.  I've attempted to contact thebackernation through their contact form and just keep getting a 'message failed to send try later' I really want to check on this person before proceeding, any advice?