I buy Plus subscription but my defender stays at trial what to do
Hi,
Bitdefender installed on your device is still linked with the trial version in this case. You can access your Central account where you activated the subscription, and reallocate your protected devices from the trial version to the paid one by following the steps from this article:
https://www.bitdefender.co.uk/consumer/support/answer/88461/
I hope this helps.
Regards