reCatcha on forms

I added my key and password into the shortcode on a custom frontend register form.

[mb_user_profile_register email_as_username="true" label_submit="Create account" confirmation="A verification link was sent to your email.<br><br>
If you don't see it, check your junk folder." password_strength="false" recaptcha_key="my-correct-key-was-here" recaptcha_secret="and-correct-secret-was-here"]

But every submit I get 'Invalid captcha token'

<?php
//Rego form

function registration_frontend_fields($fields) {

$first_fields = [
      [
            'name'    => __( 'Full name', 'your-text-domain' ),
            'id'      => 'name_field',
            'type'    => 'text',
            'class'   => 'full_name_field',  
            'desc'    => 'enter your full name. This field is required', 
			'placeholder' => __( 'Enter your full name', 'your-text-domain' ),
            'tabindex'=> '-1', 
        ],

          [
                'type'    => 'custom_html',
                'std'    => __( 'Email', 'your-text-domain' ),
              'class'   => 'signup-class',
                 
            ],

		[
			'name'     => __( 'Email', 'mb-user-profile' ),
			'id'       => 'user_email',
			'type'     => 'email',
			'placeholder'   => __( 'Work email', 'your-text-domain' ),
			'required' => 1,
			'columns' => 12,
		],
           [
                'type'    => 'custom_html',
                'std'    => __( 'Which describes you best?', 'your-text-domain' ),
              'class'   => 'signup-class',
                 
            ],

		[
			'name'    => __( 'User role', 'your-text-domain' ),
			'id'      => 'selected_user_role',
    
			'type'    => 'select_advanced',
			'options' => [
				'practitioner' => __( 'Professional', 'your-text-domain' ),
				'contributor'  => __( 'Academic', 'your-text-domain' ),
				'researchpro'  => __( 'Researcher (Non-academic)', 'your-text-domain' ),
			//	'student'      => __( 'Student', 'your-text-domain' ),
			],
			'inline'  => false,
			'required' => true,  
		],

	[
			'name'     => __( 'Terms of service', 'your-text-domain' ),
			'id'       => 'user_terms_agreement',
			'type'     => 'checkbox',
			'required' => true,
		],

	];
		 
	
$fields = array_merge( $first_fields);

 return $fields;
    };
			
			
add_filter( 'rwmb_profile_register_fields',  'registration_frontend_fields');
?>