Heliopanel is no longer supported. I haven't seen in mentioned in a year or two at least, and I know it's not being actively developed anymore. It had little in the way of useful functionality anyway, so you're not missing much. When I messed with a version a long time back, it didn't work well and didn't add anything of value. Everything you need to manage your hosting account is done from cpanel or by using the scripts at heliohost.org.