How can i Fix?

I am also using this plugin on my site here :

getting errors too frequently like 1………. (7) Uploading a file fails for any reason and second error is 2………. The uploaded file exceeds the maximum upload size of your server. for second error, I limit the file size is max 7 MB but sometime if I m trying to upload 50kb or less then this error also occur in short file size. please help, how to resolve these errors

• This topic was modified 2 years, 9 months ago by Yui.
• This topic was modified 2 years, 9 months ago by Yui. Reason: redundant link(s) deleted

The page I need help with: [log in to see the link]