Stored Test in CWA disappears after test result message "Test nicht auswertbar"

[MarkusPangerl]

Bounty

please consider re-scan of QR code, especially after mesage "Test nicht auswertbar"

Scope

after scanning a new QR code (I am android user of the CWA) and waiting 2 days, the app shows message "Test nicht auswertbar", then seems to clear the stored test. A new attempt of scanning the existing QR code of the agreed form sheet (handed out from test center) failed, meaning, that the QR code's re-use is not allowed.
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Deliverables

• make the app more user-friendly in the sense that ending a test with result "nicht auswertbar" does not lead to an automatic "refresh".
• publish in GITHUB an overview on ALL test result messages ("negativ" "positiv" and "nicht auswertbar", what else?)
• give some more explanation about the next steps the user should consider after third message.

Gain for the project

• making the messages more transparent, to assure, that the users remain confident in the usage of the CWA