Regarding the State of NJ's Tax submission, Axway is not permitted to do registration and it must be through the state directly.
How to File New Jersey W-2 Information via E-File:
To file Form W-2 with New Jersey using Secure File Transfer Protocol (SFTP) technology, visit the Axway Secure Transport website https://mft-sonj.axwaycloud.com. Enter your Login Name and password and then choose the login button.
A login name and password can be obtained by e-mailing the Division of Revenue and Enterprise Services, Technical Services. E-mail requests to e-GovServices@treas.nj.gov
You can also use: https://www.state.nj.us/treasury/taxation/contact.shtml