> ## Documentation Index
> Fetch the complete documentation index at: https://docs.centipidbilling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting index

> Start from a symptom and move to the most relevant evidence-based guide.

# Find the right recovery path

## Account and access

* Cannot register / OTP expired / company taken → [Registration](/getting-started/registration)
* Lost authenticator or recovery codes → [Account security](/getting-started/account-security)
* Missing menu / authorization → [Navigation](/getting-started/navigation) and [Staff permissions](/subscribers/staff-and-permissions)
* Subscriber credentials rejected → [Network troubleshooting](/network/troubleshooting)
* Stale/duplicate active session → [Active sessions](/subscribers/active-sessions)

## Router and captive portal

* Router not detected → [Router provisioning](/network/router-provisioning)
* Router offline / high load / WireGuard issue → [Router health](/network/router-health)
* No packages on portal → [Packages](/network/packages) and [Captive portal](/network/captive-portal)
* Voucher rejected → [Vouchers](/network/vouchers)
* Binding does not work → [IP and MAC bindings](/subscribers/ip-bindings)

## Billing

* Payment pending/rejected/callback failure → [Payment troubleshooting](/billing/payment-gateways/troubleshooting)
* Paid but subscriber offline → [Payments](/billing/payments) and [Subscriber profile](/subscribers/profile)
* Invoice amount/status/linkage → [Invoices](/billing/invoices)
* Wallet/withdrawal issue → [Collections and withdrawals](/billing/collections-and-withdrawals)

## Communications

* SMS not sent/delivered → [SMS](/communications/sms)
* Provider/sender ID issue → [Messaging providers](/communications/providers-and-sender-ids)
* Scheduled campaign missing/duplicated → [Message campaigns](/communications/message-campaigns)
* Automated message missing → [Notifications and templates](/communications/notifications-and-templates)

## Portal

* Subscriber cannot sign in → [Portal access](/customer-portal/access-and-profile)
* Top-up/voucher not applied → [Packages, top-ups, vouchers](/customer-portal/packages-topups-and-vouchers)
* Invoice/receipt/usage issue → [Usage, invoices, receipts](/customer-portal/usage-invoices-and-receipts)

## Gather evidence before escalation

Record the ISP, affected record/device, exact time/timezone, scope, status/reference, exact sanitized error, and actions already attempted. Never include passwords, OTPs, recovery codes, provider secrets, router passwords, complete provisioning commands, or unnecessary customer data.