When I rearrange my app configuration including deleting and adding the streaming apps I want, the Hisense Roku tv loses my changes anytime I turn the tv off! Anyone have any idea how to keep these how I want them?
That's pretty strange, alright. When you remove a channel it removes it from your Roku account and should not be available to reinstall.
Have you tried doing an actual system restart, not just turning it off and back on?
Settings > System > Power > System restart > Restart