Nothing ruins user experience like an infinite 'Loading...' loop on a reCAPTCHA...

https://johnathankvdj950.wpsuo.com/how-to-fix-recaptcha-requires-verification-when-a-site-won-t-open

Nothing ruins user experience like an infinite 'Loading...' loop on a reCAPTCHA prompt. If your site gets stuck on 'verify you're not a robot' because of a free quota warning, you need a plan. Let’s resolve this bottleneck and keep your traffic moving.