Some of chats may have that message:
Error 1020
Ray ID: 6a0f8eb32b2eb65f • 2021-10-20 04:38:34 UTC
Access denied
This is an anti ddos message : it means that the chat account was disabled for 2 hours because it was generating too much unnatural trafic. Mostly of time it creates >30,000 entries / minute.
Our filters have isolated it and maintains it offline during the attack. After 2 hours, chat should be back online again.
Solutions for anti ddos attacks
There is no easy solution to counter an anti ddos attack. We suggest you use anti ddos attack on your site placing it behind a proxy that allows to filter many bad ips. The most popular solution is cloudflare.
You can also use some server modules such as modEvasive for apache. Nginx has its own module integrated.
Also the most radical solution would be to host the chat on your own server, which means you need the source code version.