Retrieve PHP echo with C#

Hello,

So we're creating a registration system. We need to print the message which PHP echos but currently it doesn't ever get anything. The PHP script does echo messages because we've tested with a form but we can't seem to get the message in Unity.

When a user is registered it should in theory echo two messages 'User was registered' and 'User created' but we get neither in Unity.

PHP Script: https://pastebin.com/1aAWVEu1

PHP Script referenced when you register: https://pastebin.com/9ti1nP2U

Unity Script 01: https://pastebin.com/4fezkzpz

Unity Script 02: https://pastebin.com/nXEZnju2

We need a way of knowing whether the register was successful in Unity. Note both scripts do submit the data and insert into the database, we are just having a problem getting a response.

Any help would be appreciated, thanks.