Hello,
It means that your membership has expired, although the system still considered you as Premium. At the moment for such case we need to change manually each account one by one.. which is very time consuming.
We are aware of this issue and know that is not ideal, that is why we asked the script team to solve this. However we are still waiting for their reply and don't know when this will be fixed.
In the future, if this is still not fixed, we may reject withdrawals from members with negative days. It is up to the members to extend their membership, by upgrading for 1 week more, as we are still waiting for others issues to be fixed in order to allow members to upgrade for a longer period.
Thank you for your understanding.