Automatic Mailer not working correctly

Hello

I'm using the cbSubs (CB Builder ,Joomla and all CB Plugins on the newest Version) and try to set up an automatic Email.
Therefore I have the conditions that it shoud be send to 3 of my groups when de subscription is expired (see screenshot 1)...

When i have a look in my Subscribors - there should be many with that conditions. But it only sent the mail to 4 persons who had the Expiration date in 2020

What did I do wrong?

I have been trying to set this correctly for a while now, have tried various parameters. But unfortunately that doesn't work out that well.

Very grateful for every tip
Kind regards,
Maya

Your "But do not send message if it's later than" setting is contradicting "Automatically send message at following date". You have it set to not send if it's 5 years before the expiration date, but then you've it set to send 3 days after expiration date. This creates basically an impossible scenario where no one would qualify. Typically you'd have something like the below.

Automatically send message at following date: 3 days after
But do not send message if it's later than: 4 days after

Then run a CRON task against mailer processing URL daily. Below is another option with no date range limit, but with a customer limit.

Automatically send message at following date: 3 days after
Maximum messages per customer (0=unlimited): 1