COZA or ZA Domain not working

Hi there,

I have been using your plugin and it works great,I have been having a problem with looking up .co.za or any .za domains, I have had a look at the post you had made here:

https://www.ads-software.com/support/topic/za-domains-already-taken/

I have updated the files accordingly and also added a servers.json attachment.

It, however, does not work.
I have tried other plugins and get the same issue, I had purchased the Woocommerce Domain Name Seller, which uses the same libraries as you do and get the same errors. I have tried several whois servers with no luck.

Fatal error: Uncaught Exception: WHOIS server not found for that TLD

I have these as references to where I have searched:
https://github.com/HelgeSverre/Domain-Availability/issues/31
https://www.iana.org/whois?q=co.za
https://mybroadband.co.za/vb/showthread.php/352398-Co-za-Whois-Script-Php
https://registry.net.za/content.php?gen=1&contentid=171&title=Port+43+WHOIS+Service

I have disabled the plugin for now as I need the COZA domain to work for the website. Any ideas or help will be much appreciated, welldone though on the plugin it is great.