In the creative cloud app my Photoshop CC (2017) says "trial expired"... I have a yearly subscription that I purchased about 3 months ago. Also when I try to open Photoshop it keeps saying "validating software licence" but never opens.
Sorry messed up the title. was going to say Endlessly validating software licence
I would suggest you to go to Applications > Adobe Application manager, run this and log-in when it asks you to. Then launch any Cloud App and click on 'Licence this Software' when it asks you to. Log in again with your Adobe ID, and you should get a thank you notice and your apps will stop giving the trial expiring notice.