Every page I open notifies me that all my pets have been checked out of the resort, both on mobile and my laptop. When I go to Veta Lake all my pets are still listed as checked in, and when I check my pet page they're all happy and fed. I checked them all in at once (using the GA perk). Refreshing or opening multiple pages ends up giving me hundreds of these notifications. It's not hurting me besides being obnoxious, and I didn't know if anyone else was experiencing this issue.

Others have reported this in the thread here 4 days ago. So it's not just you. Sadly, no answer from anyone of staff yet. :(

See thread linked above. :)