Great suggestion @tuanphan! Thank you so much 
@Tiamo_Ross As tuanphan suggested, you can use one of our Forms widgets as a workaround.
You can use floating pane layout and enable reopen button:
This way the feedback form will appear after clicking on the button and you’ll receive all the submissions to your email address (add it in the Notify me section on the E-mail tab):
If you’d like the form to appear from the custom button, you can follow the steps described in this article: Form widgets: How to open forms from a custom button
If you have any questions or any assistance is needed, just let us know. We’ll be happy to help 