@Knowledgeseeker98 You can troubleshoot the delivery using mboxTrace.
Trace information reflects the outcome of a Target call and any
additional data that may help in determining why this particular outcome
happened, such as a set of available branches among which the selection
was made in a campaign.
https://experienceleague.adobe.com/docs/target/using/activities/troubleshoot-activities/content-trouble.html?lang=en#section_256FCF7C14BB435BA2C68049EF0BA99E
Regards,Karan