Do the sounds that occur in the anus invalidate Wudu, and what about the acceptance of prayer and Wudu from someone who has obsessive-compulsive disorder, and what are the impurities that invalidate prayer?

Firstly: Do not pay attention to doubts during prayer or otherwise. Dispel the doubt, relying on the command of the Prophet, peace and blessings be upon him: "He should not leave until he hears a sound or perceives a smell," meaning until he is certain of the impurity. Your prayer is valid unless you are certain of the impurity. If you become certain of it after the prayer, and its time is still remaining, you should repeat it.

Secondly: Wiping the ears is a matter of scholarly disagreement. The majority of scholars hold it to be recommended, not obligatory. Consequently, for one who omits wiping the ears or wipes only part of them, their ablution is valid according to the majority of scholars, and this is the preponderant opinion. Your previous prayers are valid. Strive to repel obsessive thoughts, and if they do not subside, consult a trustworthy psychiatrist.