Which event log subtype specifically relates to wireless network issues on FortiGate?

The event log subtype that specifically relates to wireless network issues on FortiGate is indeed associated with "Wifi." This log helps network administrators monitor, analyze, and troubleshoot any wireless network-related events. The logs can provide insights into connectivity problems, rogue access points, or clients facing issues connecting to the network.

Each log subtype focuses on different aspects of the FortiGate's operation. The "Router" logs are typically related to routing events, while "User" logs capture events concerning user access and authentication. The "SD-WAN" logs deal with events related to the software-defined wide area network performance and operations. Thus, while those other subtypes serve important functions, they do not specifically address wireless network concerns, making "Wifi" the correct choice for wireless-related logging.