Nothing ruins a user’s flow like getting stuck on a 'Security Verification'...

https://high-wiki.win/index.php/Can_an_Ad_Blocker_Cause_%22Verify_You%27re_Not_a_Robot%22_to_Hang%3F

Nothing ruins a user’s flow like getting stuck on a 'Security Verification' screen. If you see 'Loading...' spinning forever or your visitors keep failing to 'verify you're not a robot' while hitting a free quota warning, you have a configuration problem