Sometimes i need multiple attempts to complete a task. Unfortunately, it seems that if i am verifying too much time a solution i did, the compiler refuse to verify my solution. The problem is not my solution in itself since i have tried the option "Download the correct solution" from CodeGym. So, even if the code is right, i can't retry myself on older task. At first i was able to redo old tasks but it came a time when the website was just refusing to compile previous tasks. Usually it's what i am doing: 1. Try a first time the problem 2. If unsuccessful continue the course until i reach another task 3. Doing next task 4. Go back to try previous task. 5. Go back to point no2 if still unsuccessful I would like to have some help to resolve my problem since i like to go back to previous tasks in order to practice or to redo those skipped previously.