License Key after purchasing TPV pos software

[terenceneo]

Dear sirs,

I had just purchase a TPV software POS for 89 Euro.

I only receive registration email and a order invoice.

I did not receive any TPV POS license key.

May I know where to retrieve it?

Thank you 

[sysme]

Hi terenceneo,

I have sent to you the invoice with the license key just 5min ago.

Please confirm that you've received.

Regards.

[terenceneo]

Dear Sir,

I had just tried the license key you send, but it's not working, it's invalid.

The version we installed are v4.51, is it because it's not a updated version that's why the key in invalid?

In additional, how could we update to the latest version for the pos software without having to reenter the data, products, category we already added in the previous version of 4.51?

Please kindly assist me, thank you.

[sysme]

Yes, just uncheck the "complete install" in the installation program.

Also is recommended make a backup before upgrade.