@Detected You have used the Get action and are adding your body to the headers. You need to use POST request - you can change the method to DELETE in the Post action
@docker0004 If you try to register an account as is, will there be an error? I mean, maybe you shouldn't have a captcha?
Please attach a test project that reproduces the problem.
@UserTrue Thank you for your advice. Yes, at first I tried the built in mongodb with it's module. It made me quite fast switch over to MySQL and the appropriate node.js module ;)