I'm new to Aweber and I'm having trouble with their "subscriber" platform. There doesn't seem to be any info as to how to operate this.

I tried to erase an email address by clicking the box for that particular one and clicking erase - - and a whole bunch of emails (subscribers) erased.

Does anyone know what that's about and what the heck is the "stop" box for?

I'm pretty good with technical stuff but this just has me stumped. Any help would be greatly appreciated. Thanks.