Hi @djamel mohamed thanks for stopping by 😊
It looks like it could be cross-domain/iframe attribution problem. The TypeformSubmit event is being sent from the Typeform hosted context instead of being associated with the parent page of your domain.
For embedded forms, Typeform’s GA setup is supposed to let the embed share the hosting page’s GA instance, with a possible embed fix of shareGoogleAnalyticsInstance / data-tf-share-ga-instance.
If only some of your embeds use that setup, that would explain why submissions appear on typeform.com for some flows but not on your own domain segments.
That’s why GA4 shows “No data for this combination of segments”: your segment is scoped to users on your domain, but the submit event is being recorded under the Typeform domain instead.
Also worth knowing: even after setup is correct, GA4 counts can still be lower because of cookie consent, ad blockers, or Safari cross-site tracking limits.
I’m not an expert in GA4 segmenting though, so it might be worth having a look at some of Google’s documentation to confirm!