Try the offline checks
These run in your browser, with the same code as the package. Nothing you type leaves this page: its security policy does not allow it to make a request at all.
Fake or unsupported things caught here, on this device: 0Counted when you finish editing a box. Kept in this browser only and never sent anywhere: this page cannot make a request.
Quotes
Is each quote really in the source text? One quote per line.
Figures
Does every number in the draft appear in the materials you supplied?
Grounding
Does each tagged line trace to an approved claim, with the same figure? One claim per line, numbered c1, c2 in order.
Citations, retractions, values, links and legal need the network, and support needs a model, so they are not here. The reference shows how to run each.