Zijvanhem on "[Plugin: CommentLuv] Error. Parsing JSON Request failed. error! not authorized 5ec7454184"

When I'm on a site where I want to use commentluv I get the following error:

Error. Parsing JSON Request failed. error! not authorized 5ec7454184

My website is http://www.zijvanhem.nl

What can I do to fix this?

https://wordpress.org/plugins/commentluv/