backupwordpress and hostgator issues

Hi, I run several sites under same hostgator account.
A few weeks ago i installed your plugin into one site, then when tried to activate it – got error: “BackUpWordPress requires PHP version 5.3.2 or later and WordPress version 3.9 or later to run. It has not been activated. Learn more”

This is strange because my hostgator server php is 5.4 (wordpress version is 4.4.2).
So after lots of efforts i found a solution to make that site work anyways with your plugin.

Now I have a new site, very same server, i installed your plugin but forgot the solution i applied for old site…
What should I do to make your plugin work on new site (php 5.4 + wp 4.4.2) ???

https://ww.wp.xz.cn/plugins/backupwordpress/