I did that and still nothing :(
If you're certain it's the email you used when you bought your copy, please reach out to support! They should be able to find your code for you.
Just write to them through the portal of your region and let them know!
- EU support: https://eu.wargaming.net/support/en/products/pgn/help/
- NA support: https://na.wargaming.net/support/en/products/pgn/help/
- CIS support: https://ru.wargaming.net/support/ru/products/pgn/help/
- ASIA support: https://asia.wargaming.net/support/ru/products/pgn/help/