Deactivate SSL, impossible to login


I’m using Piwik since few years and I used an SSL Certificate.

Today my certificate is expired and no need to use another one for the moment. I have deactivated the SSL option in apache but when I go on my Piwik Login Page, it’doesn’t works, I need to login again, and again and again. I have verify my config file, but no option or plugin use the ssl word.
Before 2013, my Piwik wasn’t on SSL I don’t remember how to use it again just with http. Could you help me please ?

Many thanks.

See: How do I force Piwik to use SSL (https) for improved security? - Analytics Platform - Piwik