Expiration Membership

Hello,

1 – A member subscribes on January 1 to a membership for a duration of 12 months, that is until 31 December.

2 – On 01 December, he subscribes to a Listing Pack for a period of 3 months, that is until 01 March of the following year.

What will happen as of 31 December for his announcement since his subscription to the Membership Pack ends on 31 December?

Thank you for your answers.