Invisible problems

[JonothorDarry]

1. Some problems on this website are invisible: like the problem G from NERC 21/22 (contest 1666)
2. Some letters for problems are not even rendered: like a letter I for Div1+Div2 (e.g. contest 1656)
3. Also, some ratings are invalid - contest 1656, problem I, visible in "All"
4. If I'm correct, your application uses https://codeforces.com/contest/.... rather than API ( https://codeforces.com/apiHelp ) - it may lead to errors (including those above), even if the Codeforces frontend won't visibly change.

[kira924age]

Sorry for the late reply and hank you for your report.

I will investigate later regarding the issue you pointed out.