It could be a number of issues. Each time you make changes you should clear the Joomla cache. This is usually under the admin maintenance option (depends if 2.5 or 3.2.2).
Then you have your own browser cache to consider. Also if you are running Cloudflare or CDN then the server will be holding cache based on those settings.
If this resolves your problem then please edit your first post in this thread by adding SOLVED at the start of the title and then select the green tick icon. This lets the moderators know that it can be moved to the solved section.
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