SSS Concerns

Hi mommies, FTM here. I'm currently employed but due to my complicated pregnancy I have to go on leave since I knew na preggy ako. :-) 6 months na akong naka-bed rest as advised by my OB. Ngayon, my employer did file na already my MAT1 and I was checking my SSS Maternity Benefits (as a voluntary, kasi hindi ko naman alam employer ID ng employer ko), my question is, yung estimated amount ba na nakikita ko sa SSS App ko is the same sa makukuha ko from my employer or pwedeng magbago? Wala kasing binigay na breakdown sa'kin.