Middle names missing on student finance account + estrangement supporting evidence

Hi,
I made my account for student finance a couple days ago but realised when I was filling out my confirmation of estrangement form that on everything except my account I had my middle names on it. Signing up there was only a forename section and surname section so I skipped my middles and just used my first and last name (I'm realising now I probably should've put my middle names in the forename(s) section). I'm worried this will complicate things later down the line if my name on the account doesn't match my full name on my birth certificate and ID. I tried calling and couldn't get this sorted what should I do? I'm delaying sending off my estrangement letter because I want everything to match and avoid complications.
I haven't actually started my student finance application though if that matters, should I just move forward regardless?

Thanks. Also do you know when student finance applications are gonna open for 2026 september uni entry? Because right now 2025/2026 is for entry in July 2026, not onwards/sept. This confused me a bit.