I installed BuddyPress Recaptcha, but I'm getting

I installed BuddyPress Recaptcha, but I'm getting the following error message from Google, "Oops.
We are having a problem processing your request. Please try again later." Have tried several times. Is there another option for stopping spam registrations? I'm using WPLMS theme for online courses at https://glassworksdb.com/coachingu.