Cache failed on all pages

[duongminhlonge]

Hi guys,
I've installed your extension and I saw an issue. This extension affected to cache for all pages.
You can see it in this file 'app/code/Diglin/Zopim/view/frontend/layout/default.xml':
<block class="Diglin\Zopim\Block\Display" name="zopim.chat.js" as="zopim_chat_js" template="Diglin_Zopim::chat/widget.phtml" after="-" cacheable="false" />
cacheable = false affected to cache all pages. So I wonder If I remove "cacheable=false' that It won't affect to any function in this extension?
Thanks you.