One of our clients sites have not made any changes recently and this plugin has been working well.
The site averages around 3.5-4 million pageviews a month and about 350K unique visitors.
Normal load during the day hits 400-1000 simultaneous users. However, since yesterday Visitormaps only shows 40-60 people online which is way way off.
We also have Piwik Live analytics which shows correctly, it is only Visitormaps that shows live vistors way off.
Have checked all logs, no related errors and can not find anything even with debugging turned on.
Im clueless :)