I did my 1st FP and had my interview on Jan 22nd. Haven't heard anything and status has not changed on their website. But after 60 days, I received another FP notice. Same has the first for I-485 and I-765. My EAD has already been approved.
What would be the reason for 2nd interview notice? Has my first one expired or what? Am confused?

What would be the reason for 2nd interview notice? Has my first one expired or what? Am confused?