Which version of this plugin you are using?
What is your website url?
Did you tried “Settings > Advanced noCaptcha & invisible Captcha > Licenses
Then remove your license key and save changes, again input your license key and again save changes.” ?
If still not working, can you give me access to your website so that i can try? If yes, please send using https://www.shamimsplugins.com/sensitive-information/