When logging in to Xbox live to get the free mash up pack

I was logging in to get my free Deep Sea mash up pack, today (1 June) but it didn't work. Steps to reproduce: (1) sign out of your Xbox live account. (2) log back in to your Xbox live account. (3) go to your marketplace packs (to see whether it worked.) I haven't received it after 12th of June 2019! Mojang, please fix this!