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

It was unfair for Thai volleyball woman players for the following these reasons

Cant switch player and cant call for the challenge

-The tablet used by Thai coaches doesnt work?? And Thailand got a lot of disadvantages because of bad technology. Is this thailand fault?????? It's abdolutely unfair. Why dont stop the game and find the way to fix or use the original way. Its not thailand's fault.

-Japanese intermediators who will send the data from thai tablet to tell the referee what thai coach wanna do know it and dont accept to tell the referee for their country benefit.

-at point 12-7, you can see that if thai can got the challenge.score will be 13-7, but thailand doesnt have the chance to use challenge due to reasons i tell. Is it fair??

-Thailand Coach. When he doesnt get fair game, its normal that he must call for the justice. He just ask why thailand cant use challenge snd cant switch players, but the referee gives thailand red card gor 2 times. Whyyyyyyyyyyy???????????????