User blog comment:RiseanTide/Roblox Redeeming GameCard Help/@comment-4196050-20150103152142

So, your major issue is that Mozilla Firefox is unable to effectively load pages?

Did you try uninstalling and reinstalling it Firefox? Removing any extensions and plugins that you do not 100% need (such as AdBlock, personas, etc)? Installing another browser, such as Google Chrome, and seeing if the issue is fixed? Creating a new user account on your PC and seeing if Firefox works better on there (Happened on my family's PC -2 out of the 4 non-admin accounts could not access certain features the other 2 non-admin accounts could).