There is NO such thing for Lightroom as disabling the serial number. (There is such a thing for Photoshop, but not for Lightroom)
Your previous serial number for Lightroom 5 should still work for Lightroom 5. What happens when you try to use it?
He tels me : (in french so it's translate) The Serial Number what you say is invalid, please try again or cal the support.
Same serial number as before? It should be a 24 digit (6 groups of 4 digits)...
Same version of Lightroom as before?
I bought lightroom 5.0 the 22 february 2014 and I install then.
Two weeks ago, I format my computer, so i lost (normally) the programs. Now i wont to install again the program.
I think something: Now the programm is 5.5 WHERE can i found the old version?
Lightroom 5.0 & 5.5 would both use the same serial number. Are you sure you have the right serial number? It cannot be for an older version such as Lightroom 4.
copy by the mail a recive:
Adobe Photoshop Lightroom 5 (Mac/Win,Französisch)
I copy and paste