Re: Battlefield 3: unable to play due to activation problem

@Sig2dat Hello,

Have you tried to clear Origin cache? 

1. First, make sure you can view hidden files and folders:
   1. Hit the Start button (or press Win + X for Windows 10).
   2. Click on Control Panel.
   3. Click on Appearance and Personalization, then Folder Options.
   4. Click the View tab.
   5. Under Advanced settings, click Show hidden files and folders, and click OK to save the change.
2. If Origin is running, close it by clicking Origin in the menu bar then Exit.
3. Click Start, then Computer, then double-click ( C : ) to open the C:\ drive
4. Open the ProgramData folder, then the Origin folder, and delete all the files and folders inside it except for LocalContent.
   1. If you’re on Windows XP  you’ll find the ProgramData folder in C:\Documents and Settings\All Users\Application data\Electronic Arts\
5. Go back to C:\: 
   1. Open the Users folder,
   2. Open the folder with your  username, 
   3. Open AppData, 
   4. Then Roaming, 
   5. Then Origin
      •  Delete all the files and folders inside.
6. Go back to the AppData folder: 
   1. Open the Local folder, 
   2. Open the Origin folder
      • Delete all the files and folders inside.

If that doesn't help, contact EA support to check if something is wrong with your Account:  How to contact EA support