Not able to activate LR5 again

[aiur4]

There is no way to activate LR5 even I have a serial number. I dont know why but suddenly the program deactivated by itself. What should I do?

[99jon]

You should be able to license the software with your serial number.

If you need to re-install the software you can download LR5.7.1 from the link below:

Download Photoshop Lightroom

[aiur4]

I already tried that but it didnt shows the pop-up application to put the serial number.

[99jon]

Usually you sign-in and then click license this software