UE4 Not receiving any emails

We have data assist and security assist installed, and forgotpassword.php created by security assist. It works without any problem. This is using PEAR mail SMTP.
However, we created a simple contact form with UE4 using PEAR mail SMTP as well, and it is not sending any emails.
Username, Password, smtp server are set same as the security assist email password server behavior for forgotpasswords.php.
One is working and the other is not despite their smtp mail settings are same.
It must be that some coding is wrong so I tried to check forgotpasswords.php server behavior panel to reconfirm the correct settings, but now those setting is replaced with "(&0)" and authentication is unchecke, and I can't see the settings. Funny thing is this forgotpassword.php is still functioning without any problem. We can still receive emails from this, so the setting panel is not showing actual settings on the files working.
(I just opened the setting panel but did not click "ok", just click "cancel" as we do not want to this forgotpassword to stop working)

We just want to contact form working but don't know what to do.
After send button is clicked it redirect to the page to be set without any error but we don't receive emails at all.
contact form is set to "post" in the method, and post itself ("") in the action.
email body is used default (Blank.php).

We want to find out what is wrong but we can't see the setting we made on the server behavior panel of forgotpassword.php, which is working well. We don't know whereelse to look at to find out the correct settings.