Hello @KWIKETO,
Thank you for sharing this question with our Klaviyo Community. Flows can be tricky sometimes and there are a handful of reasons why a user may not be moving through a flow.
With that in mind, I recommend reviewing the best answer to the following post which posed a very similar question:
The first three paragraphs of the reply speak directly to your solution. In addition to the suggestions in this reply, I recommend double-checking that your emails in the flow are in live mode (rather than manual or draft mode).
Thanks and have a great rest of your day.