My License key got invalid.

Yesterday I translated a document using Trados Studio 2019. The software was suddenly freezed and I restarted my PC. When I tried to restart Trados software, License was not verified and my License key got invalid. So I could not start the software. 

When I made inquiries to SDL Japan this morning, License trouble has occurred at the headquarter of SDL and has recovered. However, I remain to have difficulty to start the software. 

Please teach me what should be done to recover my License program.

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