Hey I learned this today too! 3 years later though...

Can the attempt test cases remove the duplicates? See below.

Failed for n = 7: _
Failed for n = 25: _
...
Failed for n = 7: _
...
Failed for n = 25: _

Thank you.
So is there any way this level may evolve ?

You can't.

I would like to, but i don't find the option, don't know how to do it.
Can someone help me with that ?

If there are 100,000 tests, instead of having 999,990 pass and 10 fail, this just returns 10 fail.

Something is not correct when finally attempting this kata in python 3.8. My solution does not have any recursion. There is a single, exterior def, also not recursive, with a single print statement. That exterior def is called at-most twice, yet I see dozens of lines printed out per test. The sample tests work exactly as expected: I see at most two lines, and my solution passes the sample tests.

Change Kata level to 4 or 3

Exelent Kata, which almost made me cry and tear my hair out if I had some...
But this should not be 5 kyu, I'd say it should be 4 or 3 as I've done couple 5-6 level kyus and this one is just way more complex..

Now i understand. Im trying to figure it out a solution

Thank you for your feedback but that solution does not pass all the tests.