what do these message mean ?

[yalewang]

at terminal there are such messages as datacenter connecting failed[6],dataceter connecting failed[2], old version of server,old ... .etc, what do they mean ? how to resolve it ?do there have affect on ea ? my ea do not trade for a week, normally it trade every day .

[Simon Gniadkowski]

Read this . . . V 409 is broken

[yalewang]

thank you,every time you help me first .