Here is how to change your folder permissions.
- Login to your ftp
- Make your wp-content folder 755 (In most FTP programs, this involves right-clicking -> “Permissions”). 755 is owner: read, write and execute permissions; group: read and execute permissions; others: read and execute permissions.
- Inside wp-content create a new folder called “uploads”, make it 755 (if not working, try 777 for testing, but never make a live site 777)
- Inside the control admin panel, go to settings>miscellaneous and on the first line enter “wp-content/uploads” as where your uploads will go to.
If this does not work you will have to log in to your server via SSH and make sure the ownership of the web folders are set to the webserver user (using the chown command)