Step 1: Tap Continue to acknowledge that Typing Hero uses Accessibility Service
Step 2: Tap the red battery icon to disable battery optimization for Typing Hero
Step 3: Tap Allow to let Typing Hero always run in background
Step 4: Tap the red human icon to enable Typing Hero's accessibility service
Step 5: Tap Typing Hero in the list (if you don't see it, it might be under Installed services or Downloaded services )
Step 6: Tap the switch to enable the accessibility service
Step 7: Tap Allow to enable the accessibility service
Step 8: Make sure the switch is turned on
Step 9: Make sure Typing Hero's accessibility service is labeled on
Step 10: Make sure the red battery icon and the red human icon are gone