Dear Community,
Today for the first time, I tried to use the "SMART SCHEDULER" in a Customer Journey.
I know it is enabled and in the Marketing Settings of the App I can see it is enabled. See below:

Unfortunately, no matter which customer journey settings and items I set up, the smart scheduler always gives me the same error.
I tried to change Customer Journey Start and End time schedule to see if it was giving obstacles for the smart scheduling to work.
I tried to insert multiple different items (within which, emails, wait until, wait for, etc) but nothing makes the error go away.
Here is the error message I always get and that prevents me to have the journey go live:

It is very odd because, this is the simplest customer journey I create, there are no scheduling times, nothing more than a segment and an email.

Please let me know what I am missing here.
How can I send my email with the smart scheduler?
Thank you,
Catermina