Help Please on Vendor & Customer Code

Hi Guys
I have some software which requires authorisation via a customer code and vendor code.
I have used it in the past but my subscription has expired.

The customer code (on my pc) was AC57C-211D6-4E284
The vendor code (provided by software supplier was 3004-B0B2-97D7-0B7E-7174

I thought it may be crypkey but doesn't appear to be any ideas

Thanks

so, you need show the software installer before

Only someone with crystal ball can help you.

turn back date and time of PC and try to see if it works

it it not better way to set time back

Thanks everyone I've tried everything I can think of, i'm attempting to create a keygen program but am struggling to determine how the program should generate the code.
I have attempted to crack the programme but the functions which deal with the checking of the code are huge. I'm using ollydbg 
Are there any better tools to try to understand what the programme does with the code