operator delete(ptr) doesn't work when the ptr has been initialised with new as operator syntax. WHY?

OperatorDelete.cpp

#include <iostream>
#include <cstdint>

using namespace std;
int main() {
    cout<<"Hello World! \n";
    //For invalid pointer, uncomment the below line...
    //string* s = new string[10];
    //And comment the following two lines...
    string* s = (string *) operator new(10 * sizeof(string)); 
    for (uint32_t i=0; i < 10; ++i) new (s + i) string {}; 
    
    for (uint32_t i=0; i < 10; ++i) {
        s[i].~string();    
    }   

    // XXX Why is this failing and giving invalid pointer?
    operator delete(s);
    //even delete[] doesn't work.
}