Hand converted with online PokerStrategy.com hand converter:
€0.01/€0.02 No-Limit Hold'em (8 handed)
Known players:
UTG2 = (€1.97)
MP1 = (€2.29)
MP2 = (€0.59)
MP3 = (€2.17)
CO = (€2.21)
BU (Hero) = (€2.81)
SB = (€2.00)
BB = (€2.01)
Preflop: Hero is BU with K:h, K:s.
UTG2 folds, MP1 calls €0.02, MP2 folds, MP3 calls €0.02, CO folds, Hero raises to €0.12, 3 folds, MP3 calls €0.10.
Flop: (€0.29) J:d, 2:c, 2:h (2 players)
MP3 checks, Hero bets €0.27, MP3 calls €0.27.
Turn: (€0.83) J:s (2 players)
MP3 checks, Hero bets €0.78, MP3 calls €0.78.
River: (€2.39) Q:s (2 players)
MP3 checks, Hero bets €1.64(All-In), MP3 calls €1.00.
Final Pot: €5.03.
Results:
Spoiler
Hero shows two pairs, kings and jacks(K:h K:s).
MP3 shows a full-house, jacks full of queens(Q:c J:c).
MP3 wins with a full-house, jacks full of queens(Q:c J:c).
check turn ?
Check behind the turn and reevaluate the river. 
Totally overplayed your KK here. 