After months of no problems my FTP has stopped working. I don't know why this has happened but I have changed two things so i don't know if they have effected this.
Firstly, I found I couldn't log into my 110mb account, i thought i had simply forgotten my password but it turns out that my internet security kaspersky had blocked me from doing this. At the time I didn't know so I changed my password, still I couldnt log in. I worked out how to allow the 110mb on kaspersky. I had no problems logging in after that and i changed my password back to what it was originally. I thought nothing more of it. Then, when i wanted to change something on my website I couldn't "put" it on my website using Dreamweaver as i usually do. I went in to to site>manage site when testing the connection it came up with a message (see image).

So I tried using the passive ftp like suggested with the message. This established a connection but when i try the active ftp it still doesnt work. I don't really know what passive ftp is really, can i still upload using this mode?
Please help me sort my ftp issues! (minimal technical jargon please)
Thanks in advance
James