There seems to be a limitation with using Web-To-Case out of box and reCaptcha version 3. Apparently, it only supports v2. Just want to make sure that this is true. Also, in Salesforce can you upload and have active more than one Google Key Pair? My research indicates that only one Google Key Pair can be uploaded/active with Salesforce out of box.
#Web-to-Case
Web-To-Lead and Web-To-Case functionalities in Salesforce, is designed to support reCAPTCHA v2 exclusively. This means that when implementing Web-To-Lead or Web-To-Case, you can only use reCAPTCHA v2 for spam prevention and bot detection.
At present, reCAPTCHA v3 is not supported natively by the Web-To-X framework. If you wish to use reCAPTCHA v3, it would require a custom implementation involving external verification through APIs or custom code within Salesforce to handle the response generated by reCAPTCHA v3.
Thanks