Immediately after installing the Update 9.1 (2018.04.19) on Russian servers, there was a problem with the inability to pass the observatory in an easy mode. This was a problem common to all Russian servers, as such, it was almost immediately solved by the very first server update 9.0.01.17.2 of the 2018.05.03
(See
https://allods.mail.ru/forums/showthread.php?t=137795
)
Do you plan to install the corresponding hotfix here?