Unable to copy and paste article
By default, PHPKB software does not allow end users to select and copy text from your knowledge articles. This is to prevent unauthorized copying of your intellectual property. However if you wish to disable this feature, please refer to the instructions given below.
In order to enable article text copying, go to Manage Settings > Miscellaneous tab > Miscellaneous Settings section and tick Enable Article Select-Copy option (see screenshot below).
Finally, do not forget to save the changes.