Lost Registration from Swapping SSD's

I swapped my boot SSD for a larger one and the only issue I have encountered is losing the DO registration.

Can you please advise how to retrieve the lost registration?

I got up & running by using a registration I had not previously utilized, but want to get it back for future use.

Thanks,

On our main site, Support > Lost Registration will take you to Lost Registration Retrieval which can re-send your details via email.