If you're still within the trial period, you can try contacting G Data's support team to ask about extending the trial or purchasing a license. They may be able to provide a solution or offer a more permanent solution.

G Data Antivirus 2013 - Trial Reset

If you're still within the trial period, you can try contacting G Data's support team to ask about extending the trial or purchasing a license. They may be able to provide a solution or offer a more permanent solution.