ANSWER:

1. Your prayers are valid if you missed on some parts of wudu unintentionally because Allah does not hold anyone accountable for things they did out of ignorance or forgetfulness.

For many years I didn’t know I missed some parts in wudu. So that means all my salah were void and I know that if one doesn’t pray at all he becomes a kafir. During this time period I said “Wallah” so many times not realizing the importance of it and I broke the promises. Is there any kaffarah for this as I was technically a kafir during this period? Please help me