@Tony Just tried the credentials I was trying in Utility before, it did work on www.tplinkcloud.com and I was able to login successfully. Unfortunately, I don't have another computer to try the...

@Tony : I did try the link from the bottom of your first post. I'm having the same login issue using that utility. FYI this is the URL from your first post I've tried:...

@Tony : Thanks for your reply. I'm having issue while login in to the Utility that I've downloaded from the https://www.tp-link.com/en/support/download/deco-m9-plus/#Utility. I did try the link...

@somzuth : I'm having the same issue. Deco app is not updating the decos to the latest firmware version per mentioned on - https://www.tp-link.com/us/support/download/deco-m9-plus/#Firmware. Even...