Hi @Deenoreal
Sorry to hear about this experience. If you can DM me some further details about the email address you’re using and the app version then we can investigate this for you (although I appreciate you’ve said you’re not interested in this, I thought I’d offer still 
).
Have you previously used your NI number with Freetrade even if it was to open an account just to look around but not invest (due to your prior professional life)?
Best,
Alex