I see that NuCoder does not support any currently active versions of PHP. PHP 5.3 was "sunseted" a while back as I understand it, even though there were a few bugs and some security issues. Now PHP version 7.0.1 is being released as the latest stable and recommended piece of the version 7 series. But I'd be happy if NuSphere would just support at least 5.4.x (and even that version is not supported anymore -- it's reached EOL). And I'm talking about sooner rather than later. It seems a bit disingenuous to continue selling a product that only supports tools that are over 3 years old and out of date.
Is this product, NuCoder, going to be continued?

NO, no current development, I think this is as dead as a doornail.