VibePin offers Free, Starter, Pro, and Business plans. Your current plan and its status are shown in Settings → Billing, and you can upgrade or change plans from the Pricing page at any time.
What you can try
Go to Settings → Billing to see your current plan and status.
Visit the Pricing page to compare plans or upgrade.
Check Settings → Billing for your credit balance and usage before upgrading.
If a charge looks wrong or unexpected, contact support with your account email.
For billing questions we can't answer here, contact support.