For anyone in a similar situation with online forms seeming an official means, I now screencast myself in basically every transaction.

Shift+PrtSc and done.

Having never much been into recording screens before, this took a while to discover, but is not automatic behaviour.

There are lots of utilities for doing so. I use ShareX (with the above keyboard shortcut configures) and it is the most useful app I never knew I needed. http://getsharex.com/

[So useful, I just submitted it as a link. It took a long time to find and trust anything similar.]