The test firmware that I received solves this issue.

Quick update. TP-Link Support contacted me to perform some remote control troubleshooting, complete with Wireshark packet captures, SSH sessions to the main router and satellite unit, etc. So far...

@David-TP Thanks for the reply. The only Windows devices I have available are two Windows 11 systems (no earlier Windows versions unless I use VMs), and I can reproduce this issue on both of those...

As another data point, my iPhone (iOS 17.5.1) and my iPad (iPadOS 17.5.1) are both able to establish outbound L2TP VPN connections even when the Deco's L2TP VPN server is enabled. So the issue may be...

EDIT: Wrong thread

Using a pair of BE63s at home. (The BE63 was not an option in the Model field.) When I go to the Clients page of the Deco app and tap on any particular client to view its details, it would be nice to...