To prevent spam on forms use Google’s reCAPTCHA:
- Go to https://www.google.com/recaptcha/admin/create and fill in the URL where you want to add it.
- The WP administrator/WP manager with administrator permission should get (Image 1):

Image 1
3. The WP administrator/WP manager with administrator permission should:
- add a site address to the “Label” text field
- add a site Name to the “Domains”
- choose a reCAPTCHA v3 radio button
- enter email address
- accept the reCAPTCHA Terms of Service in the check-bok
- clicking on the “Send Message” button
4. The WP administrator/WP manager with administrator permission should see (Image 2):

Image 2
5. The WP administrator/WP manager with administrator permission should go to the WP-admin page, click on the “Contact” menu, choose by the click the “Integration” sub-menu. After that, the WP administrator/WP manager with administrator permission should click the “Setup Integration” button of the reCAPTCHA (Image 3)

Image 3
6. The WP administrator/WP manager with administrator permission should fill out the fields with keys from step 4 and click on the “Save Changes” button.
7. The WP administrator/WP manager with administrator permission should click on the “Appearance” menu button, “Theme Editor” button to get into the “Theme Editor” page (Image 4)

Image 4
8. The WP administrator/WP manager with administrator permission should click on the “Theme Header” on the right bar and write the code between <header> and </header> (Image 5):
<script srs=”https://www.google.com/recaptcha/api.js></script>

Image 5
Clicking on the “Update File” button to save the result.
9. The list of forms should be opened by the click on the “Contact” menu button at the left-bar on the admin page (Image 6)

Image 6
10. The editing page should be opened by the click WP administrator/WP manager with administrator permission on the “Edit” button under the form name (Image 7)

Image 7
11. The WP administrator/WP manager with administrator permission should get into the “Form edition” page with the next information (Image 8):

Image 8
12. Put the next code at the end of the <form> before the “Submit” button to appear the widget:
<div class=”g-recaptcha” data-sitekey=” keys from step 4”></div>
and click on the “Save” button