Photoshop Elements 15 suddenly asking for licence key
I have a disc copy of PSE 15 which is installed on my Win10 machine and has been working quite happily until today. Now when I open the program, it demands the licence key/serial number. I have input this from the printed key on the CD sleeve, (making sure to enter the PSE one not the Premiere Elements 15 one also on the sleeve). There is a longish delay, then I am prompted to retry after deactuivating on one of my other devices (it is onloy on one other device, and both were working correctly simultaneously before today) or to try a different serial number.
There is also a contact support link on the failure page, when this is clicked, it says the licence is either expired (it is a disc version so should not expire) or invalid (well it was valid last week when I used the program without issue).
My colleague with her own licensed disc version in use on two machines is also experiencing the same thing today.
Please note, I am not re-installing the program, or transferring it from another device, simply opening it to do some work. Can anyone advise how to proceed, or what may be causing this sudden failure of licensing?
