O problema do seu Radio nao estar funcionando corretamente esta no "Name" dos inputs, eles estao com name diferente por isso estao marcando mais de 1, coloque todos com o mesmo "name" e ira funcionar!

The problem with your Radio not working correctly is in the "Name" of the inputs, they have different names that's why they are marking more than 1, put them all with the same "name" and it will work!