Some payment gateways with fraud detection will filter unknown IPs or detect our payment provider IPs as high risk, it may lead to some transactions falling into review or reject categories.
Payment gateways may include (but are not limited to):
-Adyen
-Authorize.net
-BlueSnap
-Checkout.com
-Worldpay
...and more
Solutions: Add the below IPs to white list:
IP list:
18.203.12.142
18.211.189.236
35.157.167.236
52.32.57.169
52.35.240.234
52.58.96.97
54.204.55.35
63.35.156.43
167.88.149.182