Strange actions of SpamSieve

I used SpamSieve 2.5 through 2.71 with Apple Mail, and moved to try out Postbox for a few months. I decided to come back to Apple Mail a few days ago and installed SpamSieve 2.81 after migrating my email. I don’t remember SpamSieve opening its stats window and its help on my opening Apple email. Any idea of what I have missed?

Thanks.

SpamSieve shows the Welcome and help at launch if it detects that you haven’t followed the setup instructions.