Website goes down when activate tawk to plugin

Hello,

I have installed tawk to plugin for my website. It is working properly some days before.
But now my website goes down every 5 min. When I have uninstalled tawk to plugin it is working fine. What is the reason behind it? It there any code or script that causes my website down?
I want to use your plugin but can’t fix this issue. Can you please help me to solve this?

Thanks,