I am unable to upload the subscribtion code purchased by me.
ONLY Bitdefender staff can have access to your Bitdefender Central account, your devices and/or your payments/purchases.
So, you should contact Bitdefender Consumer Support by chat, telephone or e-mail:
Chat is the fastest way to get in touch with Bitdefender Consumer Support.
NOTE: Bitdefender telephone support is not toll-free!
Also, @Alexandru_BD and @Mike_BD (they both work for Bitdefender) can take a look here and help you with the issue. You can PM them.
After checking your Central account, I have noticed that you have successfully activated a Total Security license today. This license will expire in 2024.
For future reference, in the event an activation code is not accepted for some reason, it will usually return an error message. You can check the below article for common error messages that can be encountered and what they mean:
Let us know if you have any questions about your Bitdefender product.