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Perfect thanks!
Just for my understanding, what is exactly what steemapp do when is in myy athorization field at 50%?

Yes that was my fear too, but idk why it shows 50%. I checked other uses that did not authorize anybody, they are getting same rewards as us. So basically we are not losing money.

I just want to prevent them from posting/upvoting on my behalf. I will ask them on discord chat.