Deactivation failed, now a broken installation. Please deactivate my one activated license for me.

I tried to deactivate my one activated license in order to reactivate it onto a new device, but deactivation failed. Now the one installation (out of 2 available) is broken and unusable, and I can't deactivate it in any other way. Can this first activation be made available for me to install on a new device? Please help me deactivate the one currently not working installation.

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