Bug login in blog or shop

The bug occurs when logging into the site; the login button simply doesn't do anything. Clients are reporting this.

I've tested it in five browsers and the issue persists.
https://starcitizenbuy.ru/novosti/starcitizenbuy/den-rozhdenie-star-citizen-buy

Your admin and FTP login details haven't changed, you can log in.

I'm really asking for help. It's our birthday today, but people can't access their accounts.