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But not once they did not answer me!
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you are aware that this sentence means the same as "but every single time they answered me." ?
two times "no" is a double negative and means "yes".
but to come back to your actual issue, the dev of this coin is not responsible for the actions of the different exchanges.
he cannot really do anything about it.
but as you can see one of the posts above mine states that the dev even has tried to do something about it anyways what even cost him extra money.
that is very kind of the dev and not as a matter of course.
by the way it is a kind of normal thing for exchanges to have to update several wallets sometimes.
that might be annoying for some of us, especially in certain price levels with potential profits for us, but it's not really the fault of the exchanges either if something like that happens.
anybody is always angry about the timing of certain maintanances.