Can no longer simply email invoices

I'm really confused on this push to online payments breaking simply emailing my customers their invoices as we have for countless year.

It says "you no longer have access to share your invoices. To continue sharing invoices and accepting payments upgrade now".

Firstly, I only want to share my invoices, I don't want to "accept payments" through any system other than direct bank deposit. 

When I follow online instructions to turn off online payments, it tries to take me to the place where I have to register for online payments. So I have to register for a thing I don't want so I can turn it off the thing I don't want? And the registering system wants so much information, that's a no go from me.

I really hope I'm missing something obvious and this is not reality, it's hilariously inept or anti-consumer as you are forcing me into something I don't want or will ever want. I simply want your program to just email my customers a PDF of the invoice (as it always has), that is all.

Right now I'm exporting invoices as PDFs and emailing them myself manually, which is a ridiculously inefficient system.