You might need to change a setting. You might have left the tracking off your pages. You might....
🧐
It is time to investigate.
First step in your investigation is you should isolate the conditions which increase the problem.
Try to isolate what is different about those visitors.Segments (at the top of the dashboard, next to dates, marked "All Visits") is a good place to find this.
Next, try to isolate by date (try both single weeks and single months). Next try to isolate by operating system, browser type, and device.
Or look at Behavior, Visitors, or Acquisition. Remember: you are trying to find which condition will increase the rate of malfunction.
If you manage to isolate this factor for reproducing the issue, you can
double-check all the resources at Matomo's Help Center: https://matomo.org/help/
search the community help in https://forum.matomo.org/
check to see if there is any conversation in known issues https://github.com/matomo-org/matomo/issues
If the numbers are way off (especially if they are an even multiple: 2x, 3x) visit your website, open the browser (Firefox, Brave, Edge) devtools. In the developer tools -> Network tab, look to see if either Google Analytics or Matomo is sending redundant signals, such as sending the pageview event twice.
It's always possible that Matomo is correct and your Google Analytics numbers were wrong all these years.
You could have set something wrong in GA. But remember too that GA is an advertising company, that lends you GA for free so they can do their real work: selling ads. What does that do to their definitions: a famous one is Google's definition of attribution.
🧐
It is time to investigate.
First step in your investigation is you should isolate the conditions which increase the problem.
Try to isolate what is different about those visitors.Segments (at the top of the dashboard, next to dates, marked "All Visits") is a good place to find this.
Next, try to isolate by date (try both single weeks and single months). Next try to isolate by operating system, browser type, and device.
Or look at Behavior, Visitors, or Acquisition. Remember: you are trying to find which condition will increase the rate of malfunction.
If you manage to isolate this factor for reproducing the issue, you can
double-check all the resources at Matomo's Help Center: https://matomo.org/help/
search the community help in https://forum.matomo.org/
check to see if there is any conversation in known issues https://github.com/matomo-org/matomo/issues
If the numbers are way off (especially if they are an even multiple: 2x, 3x) visit your website, open the browser (Firefox, Brave, Edge) devtools. In the developer tools -> Network tab, look to see if either Google Analytics or Matomo is sending redundant signals, such as sending the pageview event twice.
It's always possible that Matomo is correct and your Google Analytics numbers were wrong all these years.
You could have set something wrong in GA. But remember too that GA is an advertising company, that lends you GA for free so they can do their real work: selling ads. What does that do to their definitions: a famous one is Google's definition of attribution.
