Fatal error: Call to undefined method

Dear mufio,

we just updated the readme with a complete example on how to use your custom form.

Check out the installation section here:
https://wordpress.org/plugins/wp-ispconfig3/#installation

Follow the steps carefully and let us know if you still have issue running the shortcode “[ispconfig class=IspconfigRegisterCustom]” afterwards.

@mufio

I fully agree, but the strange thing is that when you really trying to use the shortcode
“[ispconfig class=IspconfigRegisterFree]” why you get an error message:

Call to undefined method
IspconfigRegisterustvarime::init()

ustvarime is not known to me

So maybe you have mistakenly inherited the class?!

@mufio

confirmed as a bug – thank you for reporting! Will be fixed shortly

Alternatively, you can take ispconfig_register_client.php or copy the IspconfigRegisterCustom class from the configuration example.

Or fix it yourself using the following patchfile:

diff --git a/ispconfig_register_free.php b/ispconfig_register_free.php
index 9518fda..509ecd4 100644
--- a/ispconfig_register_free.php
+++ b/ispconfig_register_free.php
@@ -6,6 +6,7 @@ defined( 'ABSPATH' ) || exit;
  * Free registration form example
  */
 class IspconfigRegisterFree {
+    public static $Self;
     /**
      * Used to provide subdomain registration instead of domain registration in frontend using the below template ID
      */
@@ -17,7 +18,11 @@ class IspconfigRegisterFree {
      * List of Client Limit Template from ISPConfig
      */
     public $products = [];
-
+
+    public static function init(){
+        self::$Self = new self();
+    }
+
     public function __construct(){
         // contains any of the below word is forbidden in username
         $this->forbiddenUserEx = 'www|mail|ftp|smtp|imap|download|upload|image|service|offline|online|admin|root|username|webmail|blog|help|support';