i have problem with that too, before that, i have like 80k exp 4 hrs ago(get 73 exp from dragon but dont know what to do) and i check it theres like only 30k exp. idk why the reason D:
vote up for him, because we *basically* mined in the same mine, and it sure got many diamond in there, i already have 1 dime stacks and 20+ ores. and some of my friend got much too. but always him got the ban D: .