I can confirm I have the very same issue, I subscribed to the newsletter as well after being advertised I would receive those 2 skins (Irish and Condor air vehicle), but they never appeared in my collection to use.
A week has passed, countless mails with customer support have been exchanged, many procedures have been tried, but none of them fixed this problem.
Customer support told me They will forward this as a "bug" to the Devs and that the best I can do is to look on this forum for somebody else reporting the same issue to upvote it, so this is me doing exactly that.
Wishing this may help all of us waiting on those rewards.