Trouble with box on comments

Hello,

I am making a website with NextGen gallery and Imagely themes.

The hcaptcha box works fine on the comment form for posts. NextGen gallery also makes it possible to include comments on single images in galleries — which I have enabled. The trouble is that the hcaptcha also gets applied to the comment area in the galleries but does not work. The hcaptcha area appears, but the checkbox is absent, making it impossible to leave a comment via that form.

Is there any way to either get the hcaptcha to work on that comment form or to exclude it from the form and only have it appear on post comments?

Thanks.