Missing Jetpack referrers site stats (just some of them)

Hello.
If anyone can help me or give me a tips for resolve somehow this bug.

By few days i see that from my site stats at referrers category is missing a source.
All my traffic on my referrers category come from 2 big source, “search engine” and “XXXXX” which is a blog from where i get redirects.

Now the “xxxxx” source is missing from my stats, also i cant find that traffic in the past days…. but that traffic exist there because i see on tatal views.

Can anyone have or hear about same problem? or help me please because i really need that “number” from my stats

https://wordpress.org/plugins/jetpack/