Wrong visitors number

Hi, something is wrong with analytics.
Example, yesterday Piwik show double more visitors than GA or Clicky?
What can be a problem? Here is the page https://www.kamen-inzenjering.hr/
Thank you

Hi. If you are using both Matomo and Piwik PRO at the same time, you have to follow this guide to make tracking work correctly: Can I use Piwik PRO and Matomo at the same time? | Piwik PRO help center