I have just downloaded the new photoshop onto my computer from creative cloud and it when i go onto the photoshop it says sign is required and signs me in with my creative cloud email, I proceed to sign in and the box re appears asking the same and t

I have just downloaded the new photoshop onto my computer from creative cloud and it when i go onto the photoshop it says sign is required and signs me in with my creative cloud email, I proceed to sign in and the box re appears asking the same and the process repeats again and again, what do I do?