There's a thread on this in the bugs forum, go there, upvote, and add the details that EA has asked for: https://answers.ea.com/t5/Bug-Reports/Dynasty-Earned-Coach-Points-Not-Credited/td-p/13878566
The same thing has happened to me, I’m level 50 coach in Dynasty with a ton of coach abilities to upgrade and I have built up like 50k xp but it won’t give me coins and it won’t upgrade me to level 51
Sadly level 50 is the cap for your coach, so all that extra experience points go to waste. This makes the missing exp coin bug mentioned by the op even more serious.
I've seen a few people comment this same issue, and I've seen responses from other people saying that apparently level 50 is the max level to receive coach points. People are assuming/speculating that that was an intentional design, I guess EA didn't intend on players continuing with one dynasty for so long. I don't know, that's just my interpretation.
I have the same issue with my coach. I’ve reached level 50 and I’ve at nearly 60 thousand xp and he isn’t leveling up to upgrade my coach.
Exactly happening to me
