> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/troubleshooting-common-issues-in-the-email-marketing-interface/api-connections-are-failing.md).

# API connections are failing

{% hint style="info" %}
**API connection errors are usually due to one of the following issues:** 
{% endhint %}

{% hint style="danger" %}
**You enabled the Cloudflare proxy for HTTPS but didn't complete the SSL conversion on the VPS.** 
{% endhint %}

<figure><img src="/files/kZBhW08ChYJ60qOH7Sqq" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
**Complete the SSL conversion and restart your ESP.**&#x20;
{% endhint %}

{% hint style="danger" %}
**The domain used to access the ESP doesn't match the admin\_url domain in the edcom-install/config/edcom.json file on the VPS.**
{% endhint %}

<figure><img src="/files/0P8iWCByobnvXnI2GZ6r" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
**Use the admin\_url link you configured during installation to access your ESP in the browser or change the admin\_url to use a different domain.**&#x20;

Learn how to change the admin\_url without breaking things [here. ](/docs/post-installation/changing-the-installation-domain.md)
{% endhint %}