I bought a new computer and I'm now having problems registering Cubase 10.5 Pro. "The activation..."

I bought a new computer and I’m now having problems registering Cubase 10.5 Pro. I have the USB-eLicenser connected but when trying to open Cubase it asks me for the serial. I type it and after an error appears saying “The activation code has been used already. And activation code can be used only once to download or upgrade a license. Please contact your software vendor to get a valid activation code”

I’ve been struggling with this while googling around for quite some time now… Please help.

Nothing is required beyond plugging the USB key into the computer and having the software installed. If you have Cubase Pro the License is on the USB key, and Cubase does not ask for a serial number, ever.

Thanks for the reply i got to find the reason why this was happeing. I was instaliing the 10.5 instead of the 10.0.5 which is the one i own.

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