Slow Zoho, message showing "Unable to connect to messaging server.Connecting in 1:26Try Now"

Slow Zoho, message showing "Unable to connect to messaging server.Connecting in 1:26Try Now"

Our system is running very very slow today, at the top of the screen we have the following message, could this be the issue and how do we resolve it? "Unable to connect to messaging server.Connecting in 1:26Try Now"