Audience not showing in drop down menu

Hi, writing here is the only solution I found and my previous post (quoted below) was removed for some reason.
I modified a pre-existing audience and added people, with tags and segments based on those tags. I wanted to test how they worked and send myself a test email, but when I make a new campaign and select who I want to send it to, the audience I made doesnt show up in the drop down.

What I already tried:
-Deleting cookies
-Logging out and back in
-Checking the Audience settings (theres no option for visibility tho the ai bot says so)
-Duplicating a campaign that was previously sent to the audience I modified now, and it deletes it

Info that may be useful:

-I added all contacts by hand (50 or so) cause importing a cvs or putting in a list resulted in the generic mailchimp error
-They have only three basic fields (name surname and mail)
-I am on a free plan and I haven't reached the Audiences limit, cause I am currently at 9/10 but it doesnt let me create a new one, hence the modifying an old one I didnt need anymore.

If anyone knows what to do next please help, thank you