I seem to be in a similar situation to all these people.
On 8/19/15, I purchased "Parallels Desktop for Mac Pro Edition Upgrade". I've been running a Windows 10 VM, no problem. Yesterday, I replaced my Macbook Pro and restored my Time Machine backup to the new laptop. The first time I launched Parallels, I saw an alert that an update to Parallels 11 was available, so I allowed it to download and install. Then, I was presented with an "Activate Parallels Desktop" dialog... since I had purchased an annual subscription, I thought asking me again for my key was rather rude, since I had already registered and activated the key. But I entered the key as requested, then saw an alert that told me my product license had reached its activation limit. Come on guys!! Help me get up and running on my new mac, please!
--Bill