The email associated with this paper is problematic. The domain of the email is info, which is not a typical university domain. Moreover, the domain name contains an error (‘univesity.info’ instead of ‘university.info’).
All the more, the email contains some numbers that are rather unusual for an institutional address. These numbers may be associated with a contract number or client number used by a company that submitted the paper.
Paper mills often submit papers using their own email addresses rather than the authors’ in order to manage and control the submission and publication process.
More information about this specific paper mill and its emails can be found here: https://papermills.tilda.ws/paperstanupro