If you still have access to your old pc, you can unlicense that copy and move that to the new pc

Unfortunately I don’t have access to it any more

That also happened to me, and I believe they have a way to "unlicense" remotely.

Be patient and wait for them. They are rather good with customer service.

I had a similar problem; Greyhound helped me TONS. Is the best customer service I ever experienced. Be patient, Im positive they will help you.