http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/user-manual/howto.html
In the "CA certificate trust settings" select
"This certificate can identify websites". In Chrome based browsers, go to the settings and select "Privacy and security" ( chrome://settings/privacy ). Click on "Security" and on the opened
sub-page on "Manage certificates".