@Friederike *********
, make sure you got email that says “APPROVED” in the mail subject, not just says “received”. You would receive these 2 emails from the system after you submit the report.
“Received” mail is the one you got just after submit your report, to let you know your report was stored in the system successfully. “Approved” takes a bit longer.
Also check the report status on the system to make sure it shows “approved” as well.
After your report successfully approved, you can find your TM47 / 90days report receipt same style to the one you do in person in the PDF. And you are supposed to bring this receipt with your passport.