How do I re-download and deactivate/reactivate my Trados 2019 license?

My computer crashed this morning, and I have my Trados 2019 installed there. 

Long story short, I bought a new one and need to re-download my Trados 2019. 

How do I redownload Trados 2019 on my new laptop and how do I deactivate/reactivate my license?

Thanks 

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