Help with posting

Hi, I'm hoping someone can help me, my brother is a member here, and has been since the middle of March. He has registered and has a username, but never received a confirmation email. He has tried to contact someone using the "contact us" icon at the bottom of the homepage, he has never received a response. His username is Maher1510. When he tries to post a new thread, this pops up. Attachment 148595

Please help us, thanks.

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Help with posting