How to change the download server VKontakte?

Question

In contact with

Apparently, VK has one of the download servers for a day:
cs6064.vk.com/upload.php - gives an error about unavailability
At 22:00 Moscow time, the server started working. Perhaps this is due to contacting the support, or maybe it temporarily worked, because. this situation has already happened.
Update 4.06. 16:20: Today this server is unavailable again and again all downloads stubbornly go through it, so nothing is loaded. It seems that the server is tied to an account, since it does not want to through another.
Working servers usually issue "Security Breach2", for example here cs6063.vk.com/upload.php
Somehow I was unlucky, apparently that all my downloads go through this non-working server. Those. you can't add a link in a comment so that it has a thumbnail and a picture, or you can't add a video by link.
At the same time, if you re-login to another account and do the same, then everything is ok there, everything is loaded through another server, working.
I'm looking for a way to change this download server. VK stubbornly wants to load it through this non-working one.
Support for all 2 days, in response to a question in which I described everything in detail and gave a link to an inaccessible server, only asked me to give an example of the link that I am trying to insert. Once again I was convinced that some not very smart people work there.
Update: link to uptime statistics of this server, which sometimes goes upwww.alertra.com/public/77770185194a6d21e5c8115cf16...