Thank you for reading this and I really hope someone can shed some clarity/advice on my situation.
After attending my biometric appointment, where I submitted all docs and a cover letter, I realised the version of cover letter I brought with me did not include a clarification on the trips outside the UK/ stamp in my expired passport (which was also scanned during my appointment).
During one of my trips outside the UK to an EU country (as an EU citizen), I also took a day trip to a non-EU country for a few hours (which got me a stamp upon re-entry to the EU country, although not an entry stamp as they were very lax!). As this was not needed as a line in the trips section (under 2 days and as a multiple destination), I wanted to clarify it on the cover letter and it's now not there!
What are my options here?
I've now uploaded the correct cover letter to the Sopra Steria account (a couple of hours after my appointment and confirmation email but before 22:00) but not sure if they'll see it or not. I'd also purchased the document checking service but no one seemed to do any checking, just scanning.
Can I ask them to replace the submitted cover letter with the correct cover letter? Will it impact my application, even if it is such a small oversight and does not affect the number of days I was away (well under 450).
I'm pulling my hair out over such a silly, small mistake

Thank you again xx