Hi @alexac314, thanks for reaching out to the Community!
Klaviyo list-triggered flows should send to contacts that are imported to the trigger list. If this is not happening, check that you are importing these contacts to the same list that is triggering the flow, and check any trigger filters or flow filters that may be blocking your contacts from receiving the flow.
For example, it’s common to have a condition that checks for list membership or consent. If your flow has a condition such as what someone has done > has subscribed to list, all recipients may be blocked from your flow since you manually add your contacts and therefore, no one has taken an action to subscribe.
I hope this helps!