ye its very danger
i get 3 people get same stuff lol den i just realize how dumb is this
All of my account is uncalibrated now lmao, you should play on them fea, boost me to immortal!!!! 
Yep, that happened to my friend too. He was legend 1 but after half year of not playing, his medal disappeared and has to recalibrate again. Unfortunately, he lost more games than winning in 10 TBD matches, he is archon 1 now. I think we have to play once in ranked match in every 2 months time in order to prevent this stupid thing happens.
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okay so i unsure if this is true but 4 accounts already like dis i think,sometimes your account became uncalibrated again for no reason even tho you didnt click calib
so,just now i calib my friend account together and we got 7-3,but we lost like -150 -200 or something (usually this is like +200) from 5,3 to 5,1 or so (the calibration is automatic)
and on another case,one of my friend who is at 7000 mmr,get 5-5 (5 wins on party,5 lose streak straight on solo ) get -500 but this is party and solo so maybe we all tink this is just that probably
but,the other two more is pretty convincing i think one of my friend have 5k mmr+ ish and we usually can party together but suddenly get uncalibrated thing and suddenly cant party anymore (since u nid divine 1 (4,600 mmr) to party with immos usually) so it means the mmr drop below to 4,6 and become ancient or something
and theres one more acc with same guy its at div 2 or div 1 i think 4,6-4,8 ish and get same uncalib thing and cant party with me last time (dropped to 4,6)
all of the accounts are like didnt get play for 3-6 months i think or more,so ye
if u dun wanna lose your casino earned points probably play a game or something every 3 months so it doesnt become uncalibrated and decay
if anyone know wat is the exact time for it to be uncalibrated automatically tell me lol