Please login as admin and go to admin console.
Then check the following settings:
History Count
When a user joins the chat room, Cute Chat shows the old chat record of this chat room. This defines how many records will be displayed when each user joins this chat room.
History Days
When a user joins the chat room, Cute Chat shows the old chat record of this chat room. This defines how many days of records will be displayed when each user joins this chat room.
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx