We couldn’t find a logged call in Claire’s account with the correct record details. Make sure that the Subject, Related To, and Regarding fields are correct.
I finally passed this challenge after change Time Zone from Japan time to New York Time and Locale & Language from Japanese to English.
I was having the same issue...I went into Set Up -> Profiles -> System Administrator (since that is what our User is set up as within the Dev Org) -> Object Settings -> Events & Tasks -> Make sure -Master- is set as Assigned Record Type. It defaulted as Advisor/Client Associate Task and that is why we're not seeing it within the Person Account.
I was able to have my challenge validated once I filled the fields: Name and Related to in both tasks.
https://trailhead.salesforce.com/trailblazer-community/feed/0D54V000077jRy9SAE
I finally fix this, I mistakenly chose "Call" on the "Task Type" field. I should leave it as blank and fill in the "Task Subtype".