I'm using PrestaShop 1.7. Default theme. Default modules and so on. And I haven't installed anything yet. When I send a message using the form within the "Contact Us" page it will show a message with a red background saying "An error occurred while sending the message."
I have tried to turn off modsecurity, change between php versions and some configs, but nothing seems to help.
I would appreciate a lot some help with this, and I'm willing to pay for a solution if this problem is not related to the web hosting service.