Answer 1

Currently available to new users..
Soon it will be available to all i guess..
Also I think, you can access it by signin by web version...
edit: comming soon

Answer 2

When I try to open new courses on the web page I get:

We can’t find that, sorry

You may not have access, or it may no longer exist.

A link to Introduction to c#: https://www.sololearn.com/learn/courses/c-sharp-introduction
But it gets you nowhere of you don't have access yet. It works for my new account.

Answer 3

Ｒｏｓｈａａｎ

updated version of sololearn have these courses..

Answer 4

I got a new account to try the new courses and finished "Tech for Everyone". I'm not sure the new courses will ever be available for the old users. The new users don't have access to some old courses. I think Sololearn should add the new courses for the old users, but let the old users keep the old courses that they have started or have certificates for. I would not want certificates to disappear.