There’s two options I would consider;
1 - IFTTT integration with Google Sheets - export everything tagges as an Expense to a google sheet. (The option here I think allows you to add the image URL but I may have that wrong)
2 - Use the native search function in the app; you can select by Category and Timeframe and export that to a CSV. (This one has a link to the reciept image included).
Though my final suggestion would be to use a separate credit card for expenses, so at least you’re not waiting for your own money to be funded back to you, and could get some benefits!
What I’d really love is a way to auto forward any expense images to Company’s Expense Service of choice.