Crazy high CPM's on Meta!! - How to check if our domain is flagged?

[YK13]

Hey everyone, We're a young Ecomm brand in the men's apparel space and our main traffic source has always been Meta ads.
ever since we created our ad account (November 2023) our CPM's and CPC's have always been crazy high.
50$-120$ CPM's.
We've had a few "Winners" but they haven't lasted that much and we've been testing a ton of new creatives and making drastic changes in them.
We've recently partnered with an agency that ran a bunch of tests and determined that there's some kind of technical issue with our ad account and after all tests were done their main suspension is that we have some kind of flag on our domain which is causing these high CPM and our bad performance.
Does anyone know how we can check if there's actually some kind of flag on our ad account/domain and how we can fix this? 
Thank you