The link needs a "Yandex" login account.
EDIT: now it works.

EDIT: one file, the "data.ldb" file, can not be accessed:
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EDIT: I retried the complete archive "RB_64bit_2017_03_11.rar" for download, and this works fine.
EDIT: Block count is now: 516008 (35). I have no VPN and fast connection to the internet, the explorer is showing 518,566 blocks currently. Waiting for catchup.
EDIT: Seems fine now: 518851 (21) in wallet, and the explorer in the internet is nearly the same. I had a try with four different Linux wallets in the past, all of them stalled. I go on with Windows temporarily.
EDIT: After importing my two different seeds, I see only very small amounts of my historical stash. Is there something like a "refresh" for this wallet?