IDR Apply button grayed out saying I don't qualify

Hello all -

My grace period and deferment just ended since it has been 6 months since I graduated, and the Federal Student Aid website wouldn't allow me to apply for IDR saying my loans do not qualify.

I have Subsidized loans and unsubsidized loans (grad plus). Per IDR guidelines, I should be able to apply for IDR, but every time I went in under FSAID website, it was always grayed out.

Additionally, whenever I asked Edfinaicials (my servicer), they said, I should be able to apply for IDR AFTER my grace period has ended on 11/16, but the website still wouldn't allow me to do so.

Anyone having similar issues with me for those who graduated from the professional schools this past May?