This error code is in general due to a configuration issue on your end

1. Lock chatbox to domain option (90% cases)

For security concerns, added an option "Lock the chatbox to website domain (and sub-domains)". By enabling this option, Crisp disallow other website domains to use your Crisp.

If your Crisp website domain is, then your chatbox is locked for
If you are using localhost, your chatbox is locked to

In general, you have to strictly use this lock option, only if you understand this security concern.

Otherwise, just disable it:

Go to your website settings: click on the "Settings" icon on the left sidebar, then click on "Websites" and select the target website in the list
Select Chatbox & Email settings
Go to chatbox security
Disable "Lock the chatbox to website domain (and sub-domains)"

Disable the lock chatbox to website domain option

2. Wrong chatbox code (10% cases)

Maybe you did a wrong copy-paste. In general, your chatbox code should look like this:

<script type="text/javascript">

Your WEBSITE_ID whould look XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX with only alphanumeric characters.
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