Losing last four digits of my licience number

Hello Christine. Please be informed that the displayed number is shortened - the last group of four characters is hidden. This is for security reasons, to prevent an unauthorized person from using your license.
The short license number is sufficient for your authentication when contacting AVG Customer Services.
Please feel free to contact us back should you need any further assistance.

When I check the licience number it shows the last four digits as missing?
I have tried re-entering it and it accepts the full number but then when I hit the reactivate key it loses these digits again?
Any ideas?

Hello Christine. Please be informed that the displayed number is shortened - the last group of four characters is hidden. This is for security reasons, to prevent an unauthorized person from using your license.
The short license number is sufficient for your authentication when contacting AVG Customer Services.
Please feel free to contact us back should you need any further assistance.