Start by checking Settings → Billing in the Digital DJ Pool app.
Past Due: a declined payment can put a membership into Past Due while payment retries are underway. Update the payment method shown in Billing and follow the status there; a decline does not necessarily mean the membership ended immediately.
Canceled or ended: access may have ended after the paid-through date. Check the status and available next steps in Billing before starting another membership.
If the status or next step is unclear, contact Support through the Help Center chat. Include your username and the email on your Digital DJ Pool account.
MP3 files already saved to your device remain there, even if app access ends.