Yea the correct "choice" for Aion US/EU atm is 2.7.0.1 RU.
Russian Servers are on same protocol thats why it works aswell and hronos didnt change it to RU/EU/US
But this is fixed in the beta of rubot you can get in the text below.
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Hey there , for those who want to try rubot on the new gameforge servers.
Hronos released the beta version with the support for it.
All basic functions should work - pet stuff still needs to be fixed tho.
Happy testing.
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looks like ncsoft aion pushed a ninja update with a different 2702 protocol
I'll let hronos know about it to fix it asap.