What are the disadvantages of using a pop-up blocker?

The main drawback of an aggressive pop-up blocker is that it can interfere with payment gateways (such as PayPal or banking sites) or legitimate PDF downloads by preventing the windows required to complete the process from opening.

AdBlock Network local allowlist

AdBlock Network mitigates this issue elegantly. If a legitimate gateway breaks, you can pause the blocker exclusively on that domain with a single click. For all other sites, the software performs read-only asynchronous requests to multiple independent endpoints to keep the firewall updated, ensuring protection of the Address layer.