Issue unable to connect to server

Hi

My name is Nancy, I work for the university of Ottawa. We are using wordpress/learndash and tin can  and we have a few modules in storyline sending tin can statements. 

We are getting an odd error only from one user. 
The user is getting "Unable to connect to server. Please verify that you are connected to the internet. Retry?" 

She has tried the module  on several browser, operating system, device and she always gets the same even though one person sitting next to her doing the exact same module, same browser, etc. was not getting the error. 

I am trying to figure out if other people have been experiencing this similar issue and if there has been a solution. 

I read that it could be that the the data is not being sent to the lrs... could it be a problem of how the tin can statements are set up in articulate.

Nancy