I JUST CHANGE MACS AND ADOBE WONT RECOGNIZE SERIAL NUMBER FOR MY LIGHTROOM 6 PURCHASE

Question

PLEASE HELP
After 2hrs on the phone with Adobe customer support, I have been sent here for a solution.  I purchased lightroom 6 in feb of 2018, and used it on my 2012 macbook pro up until today. I now have a 2015 macbook pro, and used a timemachine back up of the old HD and everything works fine, all my software, except for Lightroom 6, which asked me for the serial number for the purchase, and now does not recognize it.  Can anyone point me in the right direction to get my software running again. Thanks 
 
{Moved from Lightroom Cloud to Lightroom Classic Forum by Moderator}

Rob_Cullen · Accepted Answer

This makes total sense. I have only installed in on one machine, my 2012 MBP. I will call again tomorrow, however the 5 different people I spoke with were clueless to this possibility. I basically got the "you are using an old application we no longer support stop bothering me" response until the final call, a young lady emailed me a link to download the .dmg file, which I still have, then sent me here.

Begin a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen.

If the chat window fails to open, or is non-responsive, use a different device to start the interaction

When you 'Chat' to Adobe, insist that you only want your Activations Reset, and you are not asking for "support".

There are other forum threads with the same topic. For example-

https://community.adobe.com/t5/lightroom/how-deactivating-1-lightroom-6-0/m-p/11880813#M38141

TheDigitalDog · Answer

See: https://community.adobe.com/t5/lightroom/lightroom-6-deactivation-activation/td-p/12062523It's likely you cannot activate such an old version of LR.

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