Change Piwik server on 000webhost

Hi!
Recently 000webwost change their servers, my site is OK now, but Piwik doesn’t load. I tried to reinstall it, (deleting config.ini.php) but in the field “database server” I don’t know what to write (the database name, login and pass are the same). Anybody has the same problem? I don’t wanna lose my records.
Thank you!

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