> 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/help-topics/connecting/regional-and-account-restrictions/mfp-username-and-diary-key-setup.md).

# Why can't I connect MyFitnessPal?

MyFitnessPal connects with your **MFP username and a diary key**, not your email or account password.

{% stepper %}
{% step %}
Find your actual username under `Settings > Profile` in the MFP app (or in the diary URL `myfitnesspal.com/food/diary/USERNAME`).
{% endstep %}

{% step %}
Under `Settings > Diary Settings > Diary Sharing`, set Diary Sharing to **Locked with a Key** (not Public or private).
{% endstep %}

{% step %}
Use that key (it is separate from your password).
{% endstep %}

{% step %}
Reconnect with the username and diary key.
{% endstep %}
{% endstepper %}

The web settings page is the source of truth, since enabling it on mobile may not sync.

The diary-key field clears on error. If your credentials are correct, the error can also be transient, so retry a few times before escalating.


---

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