Filezilla-Not Connected To Any Server

[MIU132]

Hello there..i'm having a problem with the Filezilla..hmm..i download the filezilla after that..as always..i filled the "HOST" "USERNAME" & "PASSWORD",then i click Quickconnect..everything was okay ..
like this:
Response: 220---------- Welcome to Pure-FTPd [privsep] ----------
Response: 220-You are user number 76 of 500 allowed.
Response: 220-Local time is now 09:20. Server port: 21.
Response: 220-This is a private system - No anonymous login
Response: 220 You will be disconnected after 3 minutes of inactivity.
Command: USER a2476266
Response: 331 User a2476266 OK. Password required
Command: PASS *******

then suddenly it said:
Response: 530 Login authentication failed
Error: Critical error
Error: Could not connect to server


how to fixed this ..i seriously need your help..i tried it like 5-8 times..but it remain the same..then i tried to restart my laptop..it still the same..and and and..i even tried to download the Filezilla from the start..but still..it remain the same hnnn

[botg]

Wrong username and/or password for that host. Please contact your server administrator if you are unsure about your login credentials or if they are not working.

[MIU132]

Where do i contact my server administrator?

[boco]

Hosting support in most cases.