Paragraphs not displaying on front-end
Okay, it can be a few things...

If that twig template is the node, you would not use {{ page.content }}, but rather just {{ content }}. {{ content }} is the entire render array for the node.

If you wanted to split the fields up within the node twig template, you can use the format {{ content.field_foo }}.

It is already set to render the paragraph entity - so this should be all that is needed.

Another thing to check, if {{ page.content }} is totally blank, ensure that the Main page content block is set to output in the Main Content region of your theme.