At the moment, I'm giving 1 star. Until today, everything was going fine, I was calmly completing tasks, but now there's a 502 error. It's unclear whether this will be fixed — and if it is, will the amount on my balance remain. Right now it's only 150 rubles, but still. I'm hoping for the best. I couldn't find where to write to support, as I can't access the site until the problem is resolved.