Hi murryshinoda ,
Thanks for the additional details.
Your EA Account Order History should show information for purchases made directly through EA, including the order date, number, description, status, and price. EA's current documentation does not state that the Order History is limited to purchases from the last year. (EA Help: Official support)
Purchases made through another platform or retailer, such as PlayStation, Xbox, or another storefront, won't necessarily appear there and would need to be checked through that platform's purchase history.
Since you've already tested multiple browsers and older EA purchases are still missing, this doesn't look like something further browser troubleshooting is likely to resolve. EA Help would need to assist with the account and purchase history itself. When contacting them, I'd specifically explain that older EA purchases are missing from the EA Account Order History, rather than reporting it as a game issue.
I also wouldn't want to tell you that the missing purchases no longer exist simply because they aren't currently being displayed on that page.