Actually the problem is that you are using call-us instead of call-us-selector. This is why it does not look good.
Differences:
Call-us-selector - is ready to use. No modifications are necessary.
call-us is an advanced component that will require your modifications on your website / styles. You manage the styles completely by yourself.
We checked your site, and call-us is in use. Can you switch to Call-us-selector instead?
@nikolascx Thanks. Yes live snippet solved this problem but there is other problems. I have heavy seo optimized site. And when i use live snippet it cretes google pagespeed insights errors. Chat by self couses extra seo problems like attributes do not have a valid value: call-us#wp-live-chat-by-3CX, but with live snippet there is link with warning Links are not crawlable. Using static snippet i disable that. with enable-poweredby="false"
So i hopped with static snippet i can solve these problems. Is there a way to use static snippet so it displays correct on mobile devices?