Not possible.
1. I am on dedicated server hosted by Godaddy.
2. IP address is unique to our server.
3. Site is not under attack as we can see visitors traffic using goggle analytics and other tools.
Is release 1.3.3 been heavily tested?
Hello. One more note to add, the google Recaptcha is a service provided by Google so I think you should ask them why it is not working on your site
We simply provide you a free integration to this service but AbanteCart can't identify or change how reCaptcha works.
As you can see in the attached screenshot the Recaptcha v2 works just fine on my end. There is some possibility of bugs depending on your PHP version, and PHP modules installed (like cache, etc) but without any details on how to replicate it, we cant do more.
You may also ask your hosting provider just to be sure it is not their server misconfiguration (Go...dy know for such)