I had the same problem and your post helped me a lot, I wrote the name of the form I created and it worked. Thank you.
I have the same problem. I put the form template from Guterberg template and then tried to set up the Gutenverse>> setting >> form (only option after pressing setting) put admin administration button and put the info for email inside.
Also click on ” Form ” on dashboard tab and put ” Form action ” for those emails setting. But my contact form still not sending any email. But I can only see in the Entries.