Hello everybody 
We have a user property called initial_referrer which used to capture the initial referring URL of the user visiting our website. We didn’t change anything between Apr 8-9 2021 and all our initial_referrer's are returning (none) since.
Anyone else having a similar issue or any suggestions on how we can fix this?
Cheers!
Hello,
However, in general, a potential reason for this could be:
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