Sleep first. Bad night, bad day, more symptoms. Fix that before changing anything else. Not on harm reduction but the pattern is familiar.

The address matters more than the contents eventually. Changing what you order when the address is flagged changes nothing.

I would take the narrow conclusion. Broad ones are more interesting and less true.

Silent tracking in the first week is normal. Scanning happens at hubs, not continuously.

Read the methods section. It is the only part that says whether the conclusion is allowed to exist.