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

# Troubleshooting

> TPA, data, jobs, auth, billing, and timezones — quick customer guide.

# Troubleshooting

## TPA will not connect / shows offline

1. Confirm the TPA process is running (tray icon).
2. Full flow: tray **Link** → click **Link** on the web page (not only open it) → close the tab → see **Connected** in Profile and a **green** tray icon. Guide: [Install and pair](/en/tpa/install).
3. If Profile says **Linked (offline)**, pairing exists but there is no heartbeat: restart the TPA and wait a few seconds.
4. Check firewall/antivirus blocking agent outbound traffic.
5. If the agent was busy for a long time, wait or restart the TPA and re-check Profile.

## First download or sync takes forever

Expected on the **first** large M1 cache sync. Later updates are usually **deltas**. Do not cancel after only a few minutes unless you see an explicit error.

## Job fails or looks stuck

* Check **Jobs**: error, cancel, retry.
* Generator: lower `workers` (OOM) and/or `n`.
* Confirm TPA is online if the job must run on your PC.

## Pause / resume

Some generate jobs support pause/resume from Jobs. If you do not see the action, that job type does not support it.

## Verification / reset email never arrives

1. Spam folder.
2. Resend using the UI cooldown.
3. Confirm you are using the same signup email.

## Billing / portal

Use **Manage billing** / Customer Portal from Profile for payment method and invoices. Plan changes follow immediate upgrade / end-of-period downgrade rules.

## Different results in MT4

Read [Sessions and timezones](/en/settings/sessions-timezones) and [Export bots](/en/export/mt4-mt5):

* `display_tz` does not change the engine.
* GMT history vs broker +2/+3.
* `InpBrokerGmtOffset`.
* Spread/commission and block coverage.