@QuincyLarson I tried something out, and it seems I found what problem was. At the time of doing the first basic algorithms I didn’t use Chrome, but was trying out Microsoft Edge. I open FCC through it now and there are the solutions that are missing from Chrome.
As for the duplicate account, it is true, a long time ago I started FCC with another email, but soon I opened a new email account and I am using this one now. I totally forgot it. I should try opening the old account and deactivating it, though I am not sure I remember the password
BTW, it’s a pleasure to get an answer from you. Also an opportunity to say thank you for making FCC. Without it, it would be much more difficult to head down this path of self-study programmer.