Capturing without a signal
Open Capture on the phone while online once. Mati keeps the page for offline use.
Each capture is saved on the phone first and sent when the signal returns. A capture is sent exactly once, even if the phone retries.
If the server refuses a capture, the phone tells you and removes it so it does not retry forever.
If your sign-in expired, captures stay on the phone. Sign in again and they send.