generic error when send message in website

I have windows 10 and use dragon Version 92.0.4515.159 (64-bit), CIS version, comodo dome shield ver and use DucktoGo ( as my search engine), privacy badger is also installed, and I was trying to send a message to this website

when I got the error message “sorry something went wrong, try again” I tried sending via my laptop three times and three times I got this generic error message. I then tried to send via my cell phone and it worked.

how can i check whether either the firewall or the browser prevented me from sending a message to this website. I would like to make sure that neither the firewall, nor the browser prevent me from sending messages to this website. please provide steps thanks