Works great with reCAPTCHA v2 checkbox!
You can either choose to define your reCAPTCHA api Keys with typoscript, or as environment variables.
Check out the typoscript constants file for it: formrecaptcha/Configuration/TypoScript/constants.typoscript
Make sure you add constants for
publicKey and privateKey.
You could also change apiScript and verificationServer but that is not necessary.
I suggest to use DotEnv Conntector for this composer req vlucas/phpdotenv
Define your reCAPTCHA api keys as environment variables:
GOOGLE_RECAPTCHA_PUBLIC_KEY and GOOGLE_RECAPTCHA_PRIVATE_KEY
You could also set
GOOGLE_RECAPTCHA_API_SCRIPT
and
GOOGLE_RECAPTCHA_VERIFICATION_SERVER
but that is not necessary.