Experiencing similar problems with email syncing after the iOS update when Web Guard is enabled. Disabling Web Guard temporarily resolves the issue, but it's inconvenient. Looking forward to a fix in the next update.
Dude Theft Auto

Enabling the "Block Trackers" option in Web Guard resolved my Wi-Fi connectivity issues. It's great to see the community helping each other troubleshoot effectively. Kudos to Trend Micro Support for the helpful advice!
Dude Theft Auto