> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/readme.md).

# Help Center

<h2 align="center">What can we help you find?</h2>

<p align="center">Browse the categories below, or ask the assistant anything.</p>

<p align="center"><button type="button" class="button primary" data-action="ask" data-icon="gitbook-assistant">Ask a question…</button></p>

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3><i class="fa-code" style="color:$primary;">:code:</i></h3></td><td><h4><strong>API, SDK &#x26; data formats</strong></h4></td><td>The API, the SDKs, data fields, formats and provider coverage.</td><td><a href="/pages/VRuVEZHe8m3vr7EcAyxQ">/pages/VRuVEZHe8m3vr7EcAyxQ</a></td></tr><tr><td><h3><i class="fa-wifi-slash" style="color:$primary;">:wifi-slash:</i></h3></td><td><h4><strong>My data isn't arriving</strong></h4></td><td>Data not showing up, stopped, delayed, or missing from payloads.</td><td><a href="/pages/51w1zYfrApWew5JcSU6q">/pages/51w1zYfrApWew5JcSU6q</a></td></tr><tr><td><h3><i class="fa-plug" style="color:$primary;">:plug:</i></h3></td><td><h4><strong>Connecting a provider</strong></h4></td><td>Connecting providers, the auth widget, credentials, OAuth and approvals.</td><td><a href="/pages/IyjT63kVGmOPriLEWlrw">/pages/IyjT63kVGmOPriLEWlrw</a></td></tr><tr><td><h3><i class="fa-gear" style="color:$primary;">:gear:</i></h3></td><td><h4><strong>Billing &#x26; account</strong></h4></td><td>Your dashboard account, API keys, environments and going to production.</td><td><a href="/pages/VmnX7xe3GuOkMsT2U1eU">/pages/VmnX7xe3GuOkMsT2U1eU</a></td></tr><tr><td><h3><i class="fa-webhook" style="color:$primary;">:webhook:</i></h3></td><td><h4><strong>Webhooks &#x26; destinations</strong></h4></td><td>Webhook delivery, storage destinations, signatures, retries and routing.</td><td><a href="/pages/g3AEsGDFRIa1d3Yy5KJH">/pages/g3AEsGDFRIa1d3Yy5KJH</a></td></tr><tr><td><h3><i class="fa-circle-question" style="color:$primary;">:circle-question:</i></h3></td><td><h4><strong>Something else</strong></h4></td><td>Subdomains, realtime, widgets and getting help.</td><td><a href="/pages/Esb0RjaFRxOR0tvxyeRe">/pages/Esb0RjaFRxOR0tvxyeRe</a></td></tr></tbody></table>

### Popular articles

{% content-ref url="/pages/jmat0zSZSXXdRVh5pDeG" %}
[Why are so many data fields null?](/faq/help-topics/data-api-sdk/data-model-fields-and-units/null-fields-are-provider-dependent.md)
{% endcontent-ref %}

{% content-ref url="/pages/IuTmKR6P0uv8PGQU1tIq" %}
[Can I connect Apple Health from a web app?](/faq/help-topics/data-api-sdk/mobile-sdk-setup-permissions-and-crashes/mobile-only-sources-need-sdk-not-web-or-rest.md)
{% endcontent-ref %}

{% content-ref url="/pages/Uc2tJrMPfgHJA7OMZstR" %}
[Why does Health Connect re-prompt permissions on init?](/faq/help-topics/data-api-sdk/mobile-sdk-setup-permissions-and-crashes/permission-prompt-reappears-on-init.md)
{% endcontent-ref %}

{% content-ref url="/pages/oz78tUzOWlaCozkuByah" %}
[Why are daily step totals inconsistent across webhooks?](/faq/help-topics/data-api-sdk/webhooks-dedup-and-sync-reliability/daily-payload-cumulative-overwrite-by-day.md)
{% endcontent-ref %}

{% content-ref url="/pages/viTb59czGBmEXZLYfih1" %}
[How do I make production sync reliable?](/faq/help-topics/data-api-sdk/webhooks-dedup-and-sync-reliability/webhooks-as-primary-source-best-practice.md)
{% endcontent-ref %}

{% content-ref url="/pages/uaAqkTMPhfzpZ06Zw3pE" %}
[Why does the Flutter SDK fail in release but work in debug?](/faq/help-topics/data-api-sdk/mobile-sdk-setup-permissions-and-crashes/android-release-proguard-r8-keep-rules.md)
{% endcontent-ref %}
