Is it sufficient for the questioner to have announced his repentance and disavowal of what he used to publish in the forum of polytheism and misguidance, or is it obligatory for him to return to the forum again to complete the deletion of the posts or to respond to them in detail?

The questioner states that what he has done is sufficient for his repentance, and he should not attempt to enter the forum again due to its severe consequences. He has sworn not to enter it, and it is known that warding off evils takes precedence over achieving benefits. He should strive to call to Allah and clarify the truth in places other than this forum. Indeed, good deeds erase bad deeds, as Allah the Almighty said: "Indeed, good deeds do away with ill deeds. That is a reminder for those who remember." {Hud: 114}. And the Prophet, peace and blessings be upon him, said: "Follow up a bad deed with a good deed, and it will erase it." Allah Almighty gives him glad tidings with His saying: "Except for those who repent, believe and do righteous work. For them Allah will replace their evil deeds with good. And ever is Allah Forgiving and Merciful." {Al-Furqan: 70}. And His saying: "Say, "O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah. Indeed, Allah forgives all sins. Indeed, it is He who is the Forgiving, the Merciful."" {Az-Zumar: 53}.