Thank you Emre – I’ll add the cache timeout. We are using only one cache plugin.
Hi Craig – yes, it was the text widget, and I copied the shortcode, so no typos in it. It was activated and not working.
I purchased the InstaLink plugin from CodeCanyon instead and it’s working fine.
Thanks for your help.
Hi Matteo – thank you so much for your reply.
We’re only hearing about this error with one user, and she’s tried multiple browsers.
I appreciate the code modification suggestion, but don’t want to do anything that would compromise our site’s security.
What do you suggest?