Mentions not working

Hello,
I activated "mentions" in easydiscuss settings (see http://nimb.ws/rcivPh)
and inserted a mention to a user in this post
https://accademiainfinita.it/forum/1116-meditazione-per-la-pace#reply-1142
but nothing happens...

th emention is @Gauri
and the user name is Gauri (sse main topic https://accademiainfinita.it/forum/1116-meditazione-per-la-pace)

Am i doing something worng?

Thank you

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