In the past week, all the matomo reports showed a significant drop for about 2-3 days.
I spoke with the tech guys (both the site admin and the web analitycs team) and they didn’t find anything unusual, so the data appeared to be loss forever. Also, I think it’s very unlikely that site traffic really fell down like this.
I was wondering what suggestion I could give to the analytics team to find out the root cause, like checking the “tracking failures” or looking into some logs.
You may indeed check Matomo error log file…