Enabling Comments and Comment Box Missing

A link to your site would be helpful, as per WordPress Codex > Forum Welcome > Include as Much Information as Possible.

https://www.spsnyc.org

https://pastebin.com/JDHaQjFr

This is a modified Twenty-Fourteen theme, correct?

In the Dashboard left menu, go to Appearance > Editor.
On the right where all the “.php” links are, look for “Single Post (single.php)” – click on it and its code will show in the window.

Scroll down the code and see if this is in there…

// If comments are open or we have at least one comment, load up the comment template.
					if ( comments_open() || get_comments_number() ) {
						comments_template();
					}

…this is the code that calls the comments template.

Is there above it this: <!– and below it this: –> ??

Single Post (single.php)

https://pastebin.com/C5t2G3P6

You need to contact whomever modified your Twenty-Fourteen theme and have theme correct this.

I have the same (I think) problem….can’t get a comments box to open.

https://7pinedesign.com

I’ve gone into Settings> Discussions and set it at Allow Comments.
When into Pages and Posts, set both Screen Options to Allow Comments.
Went into my only Post and set it as Allow Comments”

Tried deactivating plug-ins (that was suggested many, many times in Forums).

Don’t want to change code, please!

Any suggestions? TIA