Source is too small when creating a lookalike audience

someone please help. No one has been able to help me and i cant progress onwards in the course. I would really appreciate some help. check out the image below

I got that same thing, Just move on without the look alike audience.

Hi,

To get around this issue, upload a “Custom Audience” first with all of the email addresses.

After that, you can create lookalike audiences using that custom audience as a base, then add in the different countries. In addition, you can add in the “Engaged Shopper” part as well. Both of those will expand (countries) then decrease (engaged) your list size.

Hope this helps.

so dont create a look alike audience at all?

thanks Sheryl,
i have the same problem when trying to create a custom audience