I wrote the solution of this kata on c#. The code works perfectly, it 100% passes all tests. When i press "Test" it passes the "BasicTests", but when I press "Attempt" it doesn't pass "BasicTests" with "Input string was not in a correct format" exception and passes 50 random tests. That is kata creators fault and I cannot get honor for this kata. I would like to get some help.

My code works in the test, but when i try to attepmpt it i have an error: "Timed out"