Supporter Plugin ,How to Uninstall & install again.

I changed databese of supporter plugin.
( wp_supporters, wp_supporter_signup_stats, wp_supporter_daily_stats, wp_supporter_ads )
I wanted to delete an unneccessary data.

Then, Statics of Supporter Admin was not shown
It is only shown " No data available yet ".
So, I want to uninstall & install again.

Please teach me How to Uninstall & install again of Supporter Plugin.
Only delete this ?
( wp_supporters, wp_supporter_signup_stats, wp_supporter_daily_stats, wp_supporter_ads )