Shared Preference is not retrieving a previously saved value - kotlin

Question

I have the below code to set up SharedPreferences, but when I try to retrieve a previously saved value, it is always returning the default value.
So I'm saving "Tom" into SharedPreferences with a key of "profileName", but when I go to retrieve this value, I always get the default value returned of "failed".
Where am I going wrong? I have object MySharedPreferences set up so I can access it in various other places in my app without having to always reference the context. Instead it is initialised in the MainActivity.
import android.content.Context
import android.content.Context.MODE_PRIVATE
import android.content.SharedPreferences
import android.os.Bundle
import android.util.Log
import androidx.activity.ComponentActivity
import java.util.*
import kotlin.concurrent.schedule
object MySharedPreferences {
lateinit var save: SharedPreferences.Editor
lateinit var retrieve: SharedPreferences
fun init(context: Context) {
save = context.getSharedPreferences("mySharedPreferences", MODE_PRIVATE).edit()
retrieve = context.getSharedPreferences("mySharedPreferences", MODE_PRIVATE)
}
}
class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
MySharedPreferences.init(this)
MySharedPreferences.save.putString("Tom", "profileName").commit()
Timer("", false).schedule(5000) {
val retrievalTest: String? =
MySharedPreferences.retrieve.getString("profileName", "failed")
Log.d("retrievalTest", "$retrievalTest")
}
}
}