Both of these screenshots appear to be of the Counter custom block. It is likely that any script tags are being removed from this block by HTMLPurifier. Instead, the script tags should be inserted into the Header via the Custom Header plugin. What do you currently have entered there? I would expect your <script> tag to be found there, and then a <div> or <a> tag placed in the custom block, which would be targeted by the custom script. From a quick look at supercounters website, it doesn’t appear that their default counter is created this way. Unless it can be, you may need to make local code changes to allow script tags through HTMLPurifier. See: