Ezkaton wrote Perhaps this is what's also wrong with my T8E...Edit... Same issue as you have, but it appears mine shit the bed before the 1803 update as that's still a pending download. It installed...

Model : Hardware Version : Firmware Version : ISP : Hi,I'd like to report that the Archer T9E V1 is not compatible with the latest Windows 10 update (April 2018 - 1803). I can no longer connect to...

I have the exact same problem. I can no longer connect to any wifi networks with the T9E after performing the 1803 update. TP-Link need to resolve this driver problem.