Comment box not there on pages

I need help with enabling the comments box on PAGES, not posts. The box isn’t there, no matter what I do.

I’ve read many threads and have the Comments box clicked on. I think it’s part of my theme’s code. My theme is a custom theme I received as part of a training I purchased last year.

I’m NOT a coder and have very limited knowledge. I can copy and paste though. ??

I’ve tried the code <?php comments_template(); ?> on the page.php, but it still isn’t showing up.

I need this figured out ASAP. Thank you!