Hi engineer_ahmed_elsayed,
In what challenge are you participating? I can check if my participation is pending or successful.
However I strongly recommend you to contact TechRewards team via contact us url which is located at the left bottom corner at TechRewards homepage and from my experience replay will be fast and effective.
Hope this was helpful for you...
Best regards!
(If this was helpful for you, vote for it and propose it as an answer)