It's all working now :o)

I wanted to come on here and say that my, thanks to Arnold, this is now working.

It was a combination of PHP version and server settings, but Arnold got it going perfectly – a big thank you for that.

Something else, which is very important, is that I have been using the other WHMCS bridge plugin, and that has things not working which this one does. An example of this would be the affiliates section which, on the other plugin links directly to WHMCS instead fo your home page, and this plugin linked directly to the home page – as it does from the link in WHMCS itself.