Lock-screen branch
Kindle cover missing from the lock screen
A lock-screen symptom is not the same as a missing library thumbnail. Start with the device family and sponsored-screen status; leave unrelated answers “Not sure”. Model-specific eligibility remains a separate check, not an assumed fix.
Record the symptom before changing anything
Start with the missing location. You may leave other answers “Not sure”: the result asks only for the next fact that changes your branch. A next-check plan is not proof of a repaired cover.
Selections stay in this browser and are not stored or sent. Optional analytics sends event names only after consent; unresolved results are not completions. The worksheet never asks for an account, book file, DRM state, title, author, serial number, or email address.
Optional usage measurement
The worksheet works without analytics. If you allow it, Yandex Metrica receives a page view and event names for a start, a source-bounded next check, or an unresolved result — never your selections. The provider can receive technical data such as IP address, browser details and cookies. No session replay or click maps.
Off until you choose. Changing this choice does not affect the worksheet.
Measurement details