What happened with my flow Open rate conditional

Hi everyone,
I setup a new flow
I see the open rate of the first email is 15%, but YES CONDITIONAL SPLIT is 0
Can you help to explain it and how to fix it
Thanks

Hi everyone,
I setup a new flow
I see the open rate of the first email is 15%, but YES CONDITIONAL SPLIT is 0
Can you help to explain it and how to fix it
Thanks
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