Hi David,
To finish the conversion process you must power down your CodeMeter dongle either by turning the computer off and on (restart is not enough as the key will remain continuously powered during that) or you could also unplug and replug the key. Doing the latter is most secure when there are no borrowed licenses from the key.
Read more here:
https://helpcenter.graphisoft.com/knowledgebase/75693/
Csaba
Csaba Kézér
Director, Global Customer Support
Graphisoft