It’s an actual page with the slug “/club”. And I tried both ‘club’ and ‘/club’ because I didn’t know whether you need the “/” but neither worked. Also tried it with the ID.
I also asked the devs from the mobile tool that I want to add to my site with this snipped, and they think the problem is with the wp_head, but I have no idea:
“If you need to add mobile-tools widget code only to specific pages (not for all pages), then need to choose proper $hook_name for add_action().
In your code the hook name is ‘wp_head’ – this obviously adds code to the head of all pages.
I can not suggest exact hook name, but maybe this list of all hooks can help: https://adambrown.info/p/wp_hooks”
Does that help?
Thank you for the help. Unfortunately, for some reason, it doesn’t seem to work. The popup still shows up. :/