Photoshop 12 moved to new computer by shop pros, won't work

[Jerrold25801570dmmw]

When Photoshop was opened on the new computer, it said I had to purchase the product, or get a free 30 day trial. I clicked the 30 day trial, but I purchased my Photoshop some years ago and have been using it successfully. How do I show Adobe that I purchased Photoshop already and have just moved it to a new computer? Thanks.

[Axel Matt]

Which Photoshop version you are using exactly? Photoshop or Photoshop Elements?

If you are installing Photoshop (Elements) to a new computer you have to enter a valid serial number at the first start.

If you have buyed Photoshop you must have such a serial number.

[John T Smith]

>moved to new computer by shop pros

You can't move Adobe programs, you must do a fresh install and enter your serial number when asked