Norton life lock has changed my annual subscription to a 30 day trial

I have Norton Security Premium and the account is active and does no expire until 13/08/2021. However on my computer, MacBook Pro running Catalina, the subscription is showing as a 30 day trail for Norton Lifelock. I have followed all of the FAQ and guides on the Norton site but nothing has fixed this.

is there a fix? If not I will have to find another product for anti-virus protection

Belinda