how do i change my main email for formget??

I’m trying to change my email for Formget. When I first loaded the plugin, I was testing it with an old ‘dummy’ email of mine, but now I want to change my basic profile to my ‘real’ email. It doesn’t seem to allow me to do this?? Why not? Do I need to delete and re-add the plugin from scratch?

https://www.ads-software.com/plugins/formget-contact-form/