Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

Free months are normal for subscriptions. Look at Netflix, etc.
This is another instance where a company wanted an app, and waited until the last minute to push out a rush job. Build-it-as-you-go is also normal these days. FFG did it with X-Wing for version 2 of that game. No-one uses that, despite it being the only official way to play (apart from PDFs they post up, but don't mention). They've said that their two expansions will never be added, and quietly alluded to a replacement app at some point.

There doesn't appear to be the function to add the SM and Necron codex codes.