It turns out that the NETFILE access code is now changing every year. The access code I used up until 2021 is not valid anymore. On my NOA from 2021 there is a new Access Code. I used the new code and I was able to file. The access code that appears now on the 2022 NOA is a new code as well.
It would be nice to have this clearly explained somewhere so we don't try to submit blindly until we get looked out. I hope others find this helpful.
