Hello,
I don't think I can help here, there's is too little information to say what the cause might be. Maybe someone else can jump in with an opinion, but I would recommed to get in touch with Bitdefender Support so they can have a closer look. They will require more details from you. If the situation persists, you can use the link below to contact them:
https://www.bitdefender.com/consumer/support/help/
State your contact reason / choose request category, then choose from the available contact channels, chat, phone and email/ticket. Chat would be the fastest way to reach them.
Let us know how it goes.
Regards
