2) It is upto you from 1 months to 1 year or more. Most of time people loose their badges immediately after getting it due to over excitement of doing each and every task. Getting Expelled from task will surely hinders your proress.
3)Just check rating and always learn from past mistakes and if you are doubtful then press the button give up.
All times displayed are PST - Server Time: Mar 21, 2023 23:33:38 PST