Unlicensed?
 

Hi!

When I am browsing to the forum all the time this message shows up:
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You are currently showing up as unlicensed. To download modifications and/or participate in our community. You will need to prove that you have a valid vBulletin license. To do this, go to vBulletin.com Member Support. Upon entering the support area, enter and/or verify your "Contact Email Address". For further information, please read our "Showing Up As Unlicensed?".

To protect our customers privacy you will need to Opt-In license validation for all Support Sites. You need to authorise vBulletin.org from the vBulletin.com Members' Area in order to validate your license status. You can do this at Priority Forum Support. Make sure to set the permission to allow vBulletin.org to validate your status.
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I suppose this a problem of the server and not of my browser, right?

Cheers!
:)

No, its not a server problem. You are not currently registered as a licenced user - do you own a vb licence ? if so, did you read and follow the instructions ?