Hey! In cases like this, it’s worth checking a few things. Facebook only allows you to merge pages if they have the same or very similar names, belong to the same owner (you need to be an admin on both), and are in the same category (like “Company,” “Brand,” etc.). If there are any differences, Facebook might just silently block the merge without showing an error.
Also, I’d recommend trying a different browser or switching to incognito mode - sometimes it’s just a cache or browser extension issue. Clearing your cache and cookies can also help.