I have just installed Dorico on my new iMac. When I put in the activation code that I was given at the time of purchase I am getting the error message " The activation code has been used before… Please contact your vendor. Any advice please. I want to run it on one machine with a soft license. Thanks

Login to your MySteinberg account and use the big red Reactivate button.

Please have a look here: https://helpcenter.steinberg.de/hc/en-us/articles/206530004

I am not sure it was ever registered. I only have Cubase in my Steinberg account it seems!

I just have the receipt and the original activation code on it.Thought this was the serial number

All sorted thanks!