Django Model Entries Not Available to Other Developers
Is your database file also included with "project files". If you use the local sqlite3 file generated by Django or really any other local database file that isn't in production and the other developers don't have this why would they see your updates to the DB?
I have manually added entries (rows) to the models in my Django project through the admin interface. 
I have also ran the following commands 
python3 manage.py makemigrations & 
python3 manage.py migrate
The issue is I am the only one that can see the data in the database, and other developers cannot see them. 
They are all using the same project files as present on my computer.