wow. i'm now watching the THA x DOM match. at the end of the 1st set, at 31:00, https://www.youtube.com/watch?v=FFYqr_v--y4
same problem with substitutions. yupa sanitklang (backrow player) is not allowed to come out and has to play front row, so in essence, THA has no MB in front row but a libero instead (also substitution of setters is not allowed). so either thai tablets are not working or the coach doesn't know how to use them.... very weird.
didn't other teams also have problems with substitutions?