I have WP 5.7.2, Avada 4.0.3 and CF7 5.4.1, the only plugins are Fusion Core and CF7.The default theme is also updated to twenty-twenty-one.
CF7 forms are easy to create but unfortunately they don’t work at all. When the user fills the form and clicks the Send button the timer keeps rolling but nothing happens. The message about a new contact is never sent. Disappointing. That ruins the whole idea of web pages.
This seems to be a known problem with no with no smart fix or work-around. I shall probably look for another solution, for CF7 or for WordPress.
Kari