Confirmation message not shown after clicking submit all reservation button

Hello,

There’s some issue regarding the confirmation message which is not showing to the user whenever the user clicks on the submit reservation button. All bookings are showing in the plugin’s dashboard and even mail can be sent or received but at the time of booking a room etc didn’t show any success/decline message to the user. Please help me to find some solution in this regard.

Thank you

Please a link to the form.
Regards