I was afraid of that. So, here is what's happening:
For at least a year (and possibly longer), I've received periodic reports from Russian users with connectivity problems. In the vast majority of cases, the issue is temporary.
What is most likely happening is that as your browser or app reaches out to renshuu's server, it has to jump through a bunch of other servers on the internet to get there. Somewhere, in that link (quite possibly at the edges of Russia), the network is being disrupted for some reason, is improperly configured, or something else. As it is completely out of my control, it's not something I can say with certainty.
However, I recently moved the majority of images and audio files off of renshuu's servers onto a CDN - that's one of those systems where they have copies of the files in many places throughout the world, so when you ask for an audio file, it is able to grab it from a server that is much closer.
Because of that, due to that network craziness, it's quite possible that you can connect to renshuu's server (in the US), but not the servers that hold the audio/image. The opposite might also be true sometimes, but if renshuu is down, it's unlikely that you'll know if the audio is working.
This is extremely frustrating, but it's not something that I am able to control or react to. Usually, these "outage" periods can be a few hours or a few days, but it is unrealistic for me to, for example, start making copies of renshuu's servers somewhere along the edges of Russia, funnel all the Russian users through that, and then wait for days/weeks/months to see if the the issue resolves itself.
I'm really sorry for the issue. If it comes to my attention that there is something that can be done, I'll definitely do it.
