Doesn't work with VK.com in OneAll Social Login

I have configured social login for 8 social networks using OneAll, and login to VK.com requires this plugin.

And the plugin doesn’t seem to work because I can log in with latinic VK.com names but I can’t log in using cyrillic names. Which is the whole point, unfortunately, since majority of VK.com usernames are cyrillic.

Here is the webpage I used for testing: https://biggakniga.ru/about/
If you select “Connect with” and select the last icon (VK.com), then you’ll see the window to approve the access requrest and then the window with the message:

“You have logged in with VKontakte
Please wait, you are being redirected … “

And then nothing happens: I am re-directed to the same page and I am not logged in.

Can someone please give me any advice on how to fix this issue?

https://www.ads-software.com/plugins/wordpress-special-characters-in-usernames/