Cannot write to class User when no flexible sync subscription has been created

MongoDB Atlas App Services & Realm
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1

I am having an Error: Cannot write to class User when no flexible sync subscription has been created.

I have set up my backend, added both App, User and Realm providers as well as enabled Sync.

My schemas are defined and imported as:

import { User } from "./realm/models/User";

import { List } from "./realm/models/List";

import { Todo } from "./realm/models/Todo";

import { Subtask } from "./realm/models/Subtask";

Here is how I configure sync

<RealmProvider
                  schemas={[User, List, Todo, Subtask, Recurrence]}
                  sync={{
                    flexible: true,
                    initialSubscriptions: {
                      update(subs, realm) {
                        subs.add(realm.objects(User));
                        subs.add(realm.objects(List));
                        subs.add(realm.objects(Todo));
                        subs.add(realm.objects(Subtask));
                        subs.add(realm.objects(Recurrence));
                      },
                    },
                  }}
                >
                  <AppNavigator />
                </RealmProvider>

Really Stuck on this one, really wanna make Realm work but nothing seems to work…