I could use some help with GA 4 attribution problem. We send paid traffic to our wordpress site (eample.com). From there they go to our website for users (app.example.com). From there they go to our payment processor’s website (popup embedded) (example.payments.com). GA4 is not able to keep the cross domain linking going although I have modified tag and given it all possible domains. I could use some help with it and happy to pay for someone who can help me fix it.

Can you share website?

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