Accounting EFN Orders - How do I get to my seller fees

I signed up for EFN,

I’ve only just realised that my Amazon VAT Transactions Report accounts for EFN sales on the report in EURO not GBP, fortunately they do at least include the exchange rate on the day so I can calculate back.

My question is regarding seller fees. I account for UK fees by accounting for the individual Invoices in ‘Seller Fee Invoices’ but now I’m EFN’ing I’m getting a plethora of invoices from France Italy Spain etc. My question is;

How do I know wehat the exchange rate is/was on these EUR invoices?

And my followup would be - Is there an easier way of find the fee information, rather than trawling through 50+ seller fee invoices each quarter. Am I missing a ‘fee download’ file or something?

Thanks in advance