My 1st post was trial and error.The message I received with the guild task reward stated that: i had already received this reward from another guild.I have been with GEM THEFT AUTO for 140 days so something is not working as intented 
I saw this message a few times sometime ago (can’t remember when exactly), but I did get all the rewards then an this error disappeared just as suddenly as it had showed up and I never saw it again.
It was the same as this one:
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If 2 players try to complete the same task near the same time everyone in the Guild gets 2 Guild Task messages:
1 has the reward
1 has the error message you received
So you still get the correct rewards.
I’ve asked the team to change the message in the error to make it more clear.
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