You asked a question, "How do I implement online photo albums on android?" that got three downvotes and was closed by five community members. Then you decided to re-ask the same identical question the next day, which also got three downvotes and was closed by five community members.
Both questions were deleted by the Community ♦ user one month later, on January 5, as part of Stack Overflow's automated culling process. That's probably when the question ban took effect.
The specific details of the automated ban are kept secret to prevent gaming. More info here: What can I do when getting "We are no longer accepting questions/answers from this account"?