Input Type Submit Disappears When I Edit Section Code

Hi guys,

There´s something that I can´t find out a sollution in Generatepress.

I have a section with a form in it. In this form, I want to insert a submit button and so I insert the submit button by typing in CODE mode. But when I change to "Visual" mode, the button does not show up. When I go back to code mode, the button code isn´t there as well... It disappears after I type the code and change to visual mode.

I don´t have any other plugin installed on my website, besides Akismet (not enabled).

How can I insert a submit button in the form?

I appologize for my bad english and hope you understand my question.

Tks!