[2020] Bug - Mastery Rank

4 hours ago, Plutocola said:

im Grandmaster i complete alle lvlitems max (i mean for real all) and for MasteryRank 30 I'm still missing 38k, that shouldn't be the case. so I contact the support, and for more than 3 weeks I haven't received an answer.

For one thing, not all of your Steel Path map is completed. You gain mastery for first completion on nodes under Steel Path condition, the same as you for clearing the map on regular difficulty.