Can you see other networks?
Do you know the four-digit model number of your Roku Express? Most models labeled just “Roku Express” are 2.4GHz-only, and some routers and hotspots default to 5GHz only. (And some ISPs have sent updates to their routers that turned 2.4GHz off.)
You might want to think about a radio or a noise generator for the sleeping issue – at least as a backup.
Banned but back. Because why not?