Actually Maha Builder it’s not a plugin, but we have Maha Boost Plugin.
That plugin only work some hosting config for increase page speed load.
If you have blank space you must disable it and use W3 Total Cache plugins.
It’s not supported in your hosting provider. Here detail step to install W3 Total Cache http://support.thememaha.com/forums/topic/optimize-using-w3-total-cache/.
Hope this helps,