I cannot select cards, events, tasks or mails in ActiveSync/WMDC options.

If the "cards", "events", "tasks" or "mails" categories are grayed out in ActiveSync/WMDC options, that could mainly come from two reasons.

The first one is that your mobile device is still "application locked" (this is usually the case for Smartphones).
Please check out this page if you want to check that your mobile device is "application locked".
Or this page if you want to "application unlock" it.

The second one is that BirdieSync is not properly installed on your mobile device (you should normally see an alert raising from the taskbar if it is the case). In that case, you should fully reinstall BirdieSync.

If you think that this could be related to another reason, please contact support [at] birdiesync [dot] com with a log archive built with "Tools/BirdieSync/Archive logs..." while your mobile is still connected.