Why can support see my router but not fix my printer app?
ISP telemetry covers the access network and Wi‑Fi connection; the printer’s driver, cloud account and app belong to the device maker. Support can isolate the layer and hand off evidence.
Network reachability vs application/driver.
Device vendor after network layer passes.
Show the technical detail
On a managed Wi-Fi plan
Provide a clear boundary and diagnostic summary rather than abandoning the customer.
On another provider's router
Same support boundary across ISPs.
What to be careful of
Do not request third-party account passwords.
Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026