Why are parameters missing in my Facebook CAPI transactions?

I have a Facebook Sales Channel enabled with Maximum sharing. I have both Server + Browser events coming through, but parameters seem to be missing on each purchase transaction. The only things coming back are 5 parameters (ideally, I believe it should be 11-12).

For example

Parameters (5)

content_ids: [REDACTED]
content_type: product_group
currency: USD
value: 24.95
num_items: 1

My event match quality is 8.8/10, which seems to be perfect.

I have everything in “Turn on automatic advanced matching” on.

So what am I doing wrong? Right now sales aren’t being attributed to the ads, so I’m not sure what to do next.

Hello, anyone from Shopify able to help?