I'm writing this as a bug report because I don't know where else to report. I tried sending a message to atcoder_official but I couldn't.

Basically when I go to submit a problem, the language isn't selected as usual. Then I select the language, paste the code and click submit and then it says Error (nothing else). It also doesn't show CAPTCHA as it does usually when submitting out of practice. atcoder_official, please have a look into it. Below are some screenshots too.

Thank you!