Main desktop has died. I temporarely deactivated dead one at https://account.adobe.com/activated-devices I installed with difficulties first version of photoshop on my second laptop. Now I am trying to deactivate it and install to the desktop. "No subscription". Only one copy of 2 is active and works at https://account.adobe.com/activated-devices How to install main photoshop paid version? I tried to install trial and enter known registr. key but it doesn't let me even open the trial saying that it is expired.
Contact Adobe Support and ask them for an activation count reset for your legacy product. If necessary, ask to speak with a supervisor as most new hires won't know what you're talking about. DO NOT ask for anything more than a count reset. Adobe can't help you with discontinued software.
Are you trying to sign in to Photoshop or the Creative Cloud app? It's the CC app you need to log on to first. In fact, I thought you fave to signed in to even download a CC app. So, to clarify, are you able to sign in to the Creative Cloud app?