If one was not aware of the obligatory act of washing from the fingertips to the elbows and have been doing the wrists to the elbows due to ignorance, is their wudhu still valid and salah? If it is not valid does someone need to make up those years of Salah?
The prayers that have passed are valid. However, from now onwards you must ensure that the arms are washed fully as explained.
And success is from Allah