Hello @TuscanStone ,
Are you using an inline or pop-up form created directly through us? If so, they're set to trigger a reCaptcha at more than 50 signups within a single 24-hr period. Landing page sign up forms will have an invisible reCaptcha going in the background. If you're using the Wordpress integration you'll need to add reCaptcha to it. Other 3rd party integrations and website builders may have different methods of including reCaptcha to prevent bot signups.