The following [advanced_iframe] attributes are unknown or cannot be read properly. Please fix or remove this attributes. You can disable this message in the administration on the "Options" tab:
  • Id "src="http://www.wozwaardeloket.nl"100%"" is not valid. Please check the documentation.
  • src="http://www.wozwaardeloket.nl"100%"
You have set "Use shortcode attributes only" (use_shortcode_attributes_only) to "true" which means that you have to specify all parameters as shortcode attributes. Please specify at least "securitykey" and "src". Examples are available in the administration.

Een initiatief van Evert de Graaff – Emmeloord