youre probably carding it and accepting even the high risk flagged payments always card even your own store right way make the payment legit with proxy and match billing shipping add shopify ai fraud does look for number and mail as well deactivate confirmation mail and put original card owners mail and number while checking out , also if your using shopify balance for payout remember to connect to bank with same name store is made on and always connect with plaid , plaid gives shopify green flag for your account, dont forget to give dedicated proxy or rdp for a specific store , and also include few legit traffic with some google ads easy 10-20k/month cashout