Microsoft Defender e-mail notification for user reported messages

I'm looking at this feature, but there's 2 things that I'm still trying to understand.

First, the user reports an email as phishing and the message disapears from his inbox. We mark the email as "No threats found". The user gets a message stating the email is not phishing. But the message does not return to the user inbox even though it wasn't considered a threat. Is this configurable anywhere?

Second, we selected the option "Replace the Microsoft logo with my organization's logo across all reporting experiences." And in fact we see the logo we have set for our tenant below the option. But when the email reach the inbox, the area of the logo is empty. Any way to troubleshoot this?

Thanks