@SCSIraidGURU-
The Roku channel app for Columbus Zoo was created using Roku's Direct Publisher software.
Roku is discontinuing the Direct Publisher system in January 2024. Since July 12, No new channels are being accepted via Direct Publisher and developers are being given six months to convert their apps to the new system which replaces Direct Publisher before all Direct Publisher apps will be taken down in January.
Roku Direct Publisher sunset announcement: https://blog.roku.com/developer/rdp-sunset
Meanwhile, something has changed in Roku's Direct Publisher system, as many Direct Publisher apps are reporting similar problems in loading content.
Bottom Line:
There's nothing you can do at your end to fix or get around this. Roku has to fix whatever problem they've introduced to the Direct Publisher system.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X