Please give a legit explanation why team Thailand lost two points and does not allow substitutions s

We wanna know how he gave 2 red cards to Thailand's coach. We just want to explain how the tablet does't work but the referee don't listen then gave free point to JNP. We want to challenge, that's the right that we can do but the referee say no - we want to know WHY?. On the point that we want to challenge because the JNP player touch the middle line (white line) when the ball still in the air!! - tell us WHY WE CAN'T PRESS THE BUTTON ON THE TABLET? DON'T TELL US IT'S A PROBLEM FROM A TECHNICAL PROBLEM - IT'S A STUPID ANSWER, AND WE TRY TO EXPLAIN IT BUT THE REFEREE DON'T LISTEN IF IT'S A PROBLEM FROM TECHNICAL THE REFEREE MUST CHECK THAT TABLET AND FIX IT, THIS IS THE REAL THING THAT THE REFEREE MUST DO, NOT GAVE RED CARDS AND GAVE POINTS TO JNP IN AN IMPORTANT MOMENT, I'M A VOLLEYBALL FAN FOR 18 YEARS AND I NEVER SEEN THE FREE POINT OF MACHTPOINT BEFORE, IT'S A VERY VERY FANTASTIC GAME VERY AWESOME GAME VERY UNFAIR GAME VERY SHAMEFUL GAME!!, THE REFEREE MADE THE GAME CHANGE AND HE ALSO TAKE SIDE WITH JNP haa DON'T MAKE AN EXCUSE CUZ THE WORLD SEEN IT. TELL US WHAT WAS HAPPENED ON THE MATCH BETWEEN THA AND JNP YESTERDAY. WE HOPE FIVB HAVE ENOUGH ANSWERS TO EXPLAIN US ASAP, AND WE HOPE FIVB BE NEUTRAL ENOUGH. THANK YOU.