Module Info > License Status = Invalid Remote Check Failed + cURL error

Everything worked at one point with the addon, but now it doesn't. I've contacted author of addon and get no replies.

Does this type of error have to do with a firewall issue on my server? Maybe their license check server is sleeping or shutdown?

In the server check area of the addon, I see cURL error: Could not resolve host: abc.tld

*the host name, abc.tld is not my domain, but addon author domain

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UPDATE: found some helpful threads but still digging into the problem

https://forum.whmcs.com/showthread.php?13790-Account-Creation-Failed-(Curl-Error)-Couldn-t-resolve-host-code-6

https://forum.whmcs.com/showthread.php?16996-(Curl-Error)-Couldn-t-resolve-host-code-6

https://forum.whmcs.com/showthread.php?46328-(Curl-Error)-Couldn-t-resolve-host-code-6

if the error is that it couldn't resolve the developers address, then that sounds like either the developers site is down, or at least the part required to check the license.

is their website still online ?

Yes. Website is online and developer support is not helpful... but still I have hope they may provide results to resolve.

http://www.hypnotic-monkey.com/whmcs-plugins/

If purchase trial you'll be redirected to https://my.cnuk.co/clientarea.php

Everything worked at one moment, and now, all existing products are shutdown with error: License Suspended.

Support responded "I have forced an unsuspend"... but the problem still exists.

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How can I tell if the license check is valid or is working correctly?

I launch up CMD and ping domain: my.cnuk.co and it returns 104.24.101.13 so I know it's online. I even took it a step further to whitelist the IP in CloudFlare (even though I didn't have to before and everything worked). If you goto the IP though, you'll see that Addon Author is using CloudFlare so maybe that could be a problem?

I assume the module is encrypted so there's no way of seeing the address its calling home to?

if they're responding to emails at least that's something.

Conditional logic email responses are almost as bad as no response.

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I enabled debugging on /systemmodulelog.php

When I goto run the create command in whmcs admin, I get error module action create-user with response:

Array
(
   [error] => Array
       (
           [message] => Licence error: Invalid
       )

)

• Bringing this post back to life! I'm doing my License Call a bit different now, and using an init.php script to house some details of the Licensing to make life easier, and mess with wanna be hackers that want to try and decrypt lol.
•     //--License Check
  function BWSLicensing_check_license($licensekey, $localkey='')
      {
              //--Global values from init.php
          global $LicenseAPI; global $postmd5hash;
          global $localkeydays; global $allowcheckfaildays;
          global $License_DIR;
• When I go to some pages in my script, I've had to use var_dump($responseCode); when I've gotten the Remote Check Failed.  It came up with error 503! In your debugging, use that response code to see if you are getting code 200 (success). From there, it'll grab the license status.