Ban Hammer not blocking anymore

We upgraded to the latest version of Ban Hammer, because our blacklist disappeared and spammers were registering again. Since we upgraded the list now remains but it doesn’t block registrants on the list. Anyone on the list can register and are no longer banned. Is this a bug?

This is how they appear in Ban Hammer:
@aargonar.emailind.com
@general.insurple.com
@booksprout.co
@bigdresses.pw
@uktradejobs.co.uk
@yahoo.com.hk
@scholar.adriaticmail.com
@hotelsincoventgarden.org.uk
@lovensa.com
@mail.ru

https://www.ads-software.com/plugins/ban-hammer/