Please follow the below template, it will help us to help you!
Expected Behaviour:
The trakt.tv dashboard and subsequent pages should behave as suspected - react on clicks, show thumbnails etc.
Actual Behaviour:
The trakt.tv dashboard and subsequent pages doesn't behave as suspected - react on clicks, show thumbnails etc.
Only deactivating the pihole grants the expected behavior of the site trakt.tv. All other factors like script blockers etc have been eliminated.
Edit: The entry you picked up was a second attempt to get through the pihole (and wasn't a valid URL, as stated), the trakt.tv URL was already whitelisted and didn't work, so I tried...