I completed task 11 and added the youth academy role coach to a youth academy AMC to add AMR. I have done Premium too and also added the special ability to the same player - got the special ability but not the AMR role. Contacted Nordeus and this was their reply:

Thanks for your report! We are aware of this issue and our developers will be working on it some time in the future. Unfortunately at this moment we can't confirm when the fix will be implemented, but you can follow our release notes in Top Eleven Forum.