Will somebody clear a confusion for me? I have had Piwik active and providing information about my site’s activity for sbout five years. All of a sudden Piwik has failed. I updated Matomo to the most recent version only recently and could log in to my account. Now I cannot. This on a Joomla site. Is Piwik/ Matomo still available FOC and why might it no longer work?
Of course Matomo still works
The only limitation is that the most popular Joomla plugin to integrate Matomo hasn’t been updated in many years: nfrPiwik, by nfr - Joomla Extension Directory
So I’d probably recommend you to instead just add the tracking code directly to the site template/theme.
Can you give more details? What happens when you try to login? Have you tried another browser?
I have uninstalled Piwik and installed the most recent version of Matomo
All is working okay now.