I gave up. I do not mark in NJ window electronic payment. Instead, I go to the NJ website and pay the amount through the following website. This way I make sure it is paid and the client does not come after me for penalty and interest if it does not go through Proseires.

NJ Pass-Through Business Alternative Income Tax (PTE) Login (state.nj.us)

The link may not work for you.  But if you Google search "NJ PTE online" you should be able to acces the website.