Norton 360 premium problem

Been using Norton for many years but have now got a problem . Had to reinstall norton 360 premium on my PC but when i open the desktop app i cant sign in - app says error code - 2016. Is there anything i can do to resolve this. Thanks in advance

Does Norton LiveUpdate run?
Does Norton QuickScan run?

reinstalled Norton 360 v22 or v24?
and you’ve restarted machine?

Not sure what version, dont know where to find out other than its 360 premium. It updates and will quick scan and restarted several times