Reply To: “There was a problem – Ajax Error” after submitting data form

Hi,
Thank you very much for your help. I’ve fixed it. You were right and the problem was on configuration of Stop Spammers plugin. By default, It checks ALL the forms on the website, not just comments and logins.
There is an option to check only comments and logins. Go to Stop Spammers — Protection Options and turn on the option “Only Use the Plugin for Standard WordPress Forms” in Form Checking. Now it’s working fine.

The problem was not related to have a WiFi Access or mobile Access, It was because of the list of IP Addresses allowed. By default, Stop Spammer plugin sets the IP address of your desktop’s website connection in the allowed IP address list.