If you're lucky, someone familiar with the Spectrum app may be able to answer your question.
This is a question that really should be directed to Spectrum. They wrote the Roku-compatible version of their app and supplied it to Roku. Roku just supplies the platform on which it runs.
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