message: Add that it might not work now either
  also a comma
diff: @@ -1152,7 +1152,7 @@ module.exports = React.createClass({
  "A one-off migration of cryptography data has been performed. "+
  "End-to-end encryption will not work if you go back to an older "+
  "version of Riot. If you need to use end-to-end cryptography on "+
  - "an older version, log out of Riot first. To retain message history "+
  + "an older version, log out of Riot first. To retain message history, "+
  "export and re-import your keys.",
  ),
  });
  @@ -1165,7 +1165,9 @@ module.exports = React.createClass({
  "This will have caused end-to-end cryptography to malfunction "+
  "in the older version. End-to-end encrypted messages exchanged "+
  "recently whilst using the older version may not be decryptable "+
  - "in this version.",
  + "in this version. This may also cause messages exchanged with this "+
  + "version to fail. If you experience problems, log out and back in "+
  + "again. To retain message history, export and re-import your keys.",
  ),
  });
  break;
  