Captcha not work

Hi
I am using contactform 7 , rev 5.2.
I enabled captcha V2 for my site on google. Copy and paste the keys on contactform 7, integration part.
I also put [recaptcha] tag on my forum.
But, I could not see any “I am not robot” as a captcha on my forum.

Also, when I check this form, by sending message,
I got message that, your message submitted as a Spam.

Could you please advise?

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