fireworks is asking for a serial number mac mojave

I have a Adobe Creative Cloud Subscription and until recently fireworks was running fine. Now like other posts I have seen, when I launch Fireworks on my mac, it is asking for a serial to register. I tried downloading Muse, and it works by the way. But I still can’t get Fireworks to run. The questions/posts seem to deal with Microsoft Windows but not Mac Mojave. Thanks in advance