what is going on with Supporting friends

below are 3 friends on my list and was able to support top team at 8.26pm but when i went support 2nd team at 8.34pm there was no support button yet the 3rd game at 8.35pm neither are my friends yet i could support either team and they are not even near my level for CUP game then 4th game at 8.38pm i was able too support ????

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again another friend i can`t support because no support button and i have clicked near start of game not the end off the game

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for me it was like this from the beginning of the new (servers) update.