I entered the HTML code object.

website: https://comexx.hu

HTML code to live chat box:

<call-us
style="position: fixed; right: 20px; bottom: 20px;
font-family: Arial;
z-index: 99999;
--call-us-form-header-background:#373737;
--call-us-main-button-background:#0596d4;
--call-us-client-text-color:#d4d4d4;
--call-us-agent-text-color:#eeeeee;
--call-us-form-height:330px;"
id="wp-live-chat-by-3CX"
channel-url="https://mycomexx.3cx.eu"
files-url="https://mycomexx.3cx.eu"
minimized="true"
animation-style="none"
party="kiralybela"
minimized-style="BubbleRight"
allow-call="true"
allow-video="false"
allow-soundnotifications="true"
enable-onmobile="true"
offline-enabled="true"
enable="true"
ignore-queueownership="false"
authentication="name"
operator-name="Support"
show-operator-actual-name="true"
channel="phone"
aknowledge-received="true"
gdpr-enabled="false"
gdpr-message="I agree that my personal data to be processed and for the use of cookies in order to engage in a chat processed by COMPANY, for the purpose of Chat/Support for the time of 30 day(s) as per the GDPR."
message-userinfo-format="both"
message-dateformat="both"
start-chat-button-text="Chat"
window-title="Live Chat & Talk"
button-icon-type="Default"
invite-message="Hello! How can we help you today?"
authentication-message="Could we have your name and email?"
unavailable-message="We are away, leave us a message!"
offline-finish-message="We received your message and we'll contact you soon."
ending-message="Your session is over. Please feel free to contact us again!"
greeting-visibility="none"
greeting-offline-visibility="none"
chat-delay="2000"
offline-name-message="Could we have your name?"
offline-email-message="Could we have your email?"
offline-form-invalid-name="I'm sorry, the provided name is not valid."
offline-form-maximum-characters-reached="Maximum characters reached"
offline-form-invalid-email="I'm sorry, that doesn't look like an email address. Can you try again?"
>
</call-us>

<script defer src="https://cdn.3cx.com/livechat/v1/callus.js" id="tcx-callus-js"></script>

Thanks for the help, resolved.

Best regards
Béla