I replied to your email. For the record, here is what I said:
Thanks for the nice words about the plugins.
Do you know how to program? JavaScript? CSS? HTML?
If you don’t know how to program, I can’t really help you. I can’t teach a programming course!
On the other hand, if you do know how to program, then it should be pretty easy for you to figure out how to do what you need. I can give you pointers to get you started.
Specifically, about removing fields, it’s not just about removing the fields, you’ll have to update the JavaScript that looks at those inputs. If the inputs are not on the screen, the JavaScript will break.
The button sizes are in the CSS.