Hello Sajjad,
Thank you very much for your kind review!
I’m also using WPVM with Varnish 4, but still haven’t found the time to update the selector in the admin interface. I plan to just omit the varnish version selector and instead add a selector for the purging method: PURGE/BAN.
However, the plugin has been designed with cache invalidations using BAN requests and VCL configurations that support banning cached objects using regular expressions in mind. Future releases will exclusively support this functionality as this is the most efficient way to purge cached objects.
Feel free to post more feedback in the forums or on Github, if needed.
Kind Regards,
George