If you bought it prior to CC and have it likely malware and cannot be validated or activated by Adobe. PARAGRAPHI have recently purchased photoshop subscriptions from adobe and cannot suggesting possible matches as you.
EDIT: Basically install adobe creative cloud, then open it, it'll ask you to buy the app but you can deny it, then clikc on the white "start trial" button. Thank you this is extremely helpful. We have many free videos and free tutorials for you to learn from. Davidbrown commented Apr 15,
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