What is the ruling of Sharia on the wife returning to her husband who divorced her three times, with one of his divorces not being counted due to his psychological illness, as affirmed by Sheikh Al-Fawzan, and then he divorced her again via text message after a period, and he is now requesting her return, citing his illness and lack of awareness of his actions?

If the pronouncements of divorce were issued while your husband was fully aware of what he was saying, then they are effective. If he was not aware of what he was saying when the pronouncements of divorce were issued, then what he uttered is not to be acted upon. Divorce via a text message is considered one of the allusive expressions of divorce. If the husband intended it, and he was aware of what he was doing, then it is effective; otherwise, nothing is incumbent upon him. If the divorce occurred three times, then reconciliation is not permissible, and you are not lawful for him until you marry another husband out of desire and he divorces you after consummation. If it was less than three pronouncements and your waiting period has ended, then a new marriage contract with all its pillars is necessary.