@JonSong   Same issue.  Upgraded from Pixel 7 Pro to Pixel 8 Pro both running Android 14.  Was working fine on Pixel 7 Pro. Cannot log in to Deco App.  Tried all remedies listed in original post.  Failure to log in message even after password reset.

ImtiazAli wrote

@JonSong Are you connected to the Deco (via Wi-Fi) when you're trying to log in to the Deco app?

  @ImtiazAli Yes & No! Have tried with deco wifi connection, tried on my another Tether wifi connection and tried using my mobile data connection still having same issue! 

  @MooseAR hope TP Link can help resolve both our issues soon!

David-TP wrote

  @JonSong 

Hi, Thanks for the feedback.

"The login keeps prompting "Fail to sign in, try again later" and also receiving a 6-digit code to my old phone but unable to use without the next available step on my new phone login!"

I was wondering whether you enabled the 2FA on the original mobile phone.

-If yes, did it make any difference after disabling the 2FA on the original mobile?

 

By the way, what are the model numbers of your new foldable phone and the original mobile?

It is also suggested to install the beta APP here to see whether it helps:Deco APP 3.8.36 --- Greatly Optimized Network Management Experience

 

Wait for your reply and best regards.

 

 

 

 

  @David-TP  I did enable 2fa on my old phone back than when I first set up deco and did not(unable) disabled it at all. I have tried to disabled it which require login and it prompt me the same error msg too(this happen from my old phone deco app when I tried to disabled 2fa). The fact I still holding the deco app in the old phone, afraid that I am unable to login with the new phone, I do still have a backup access! 

My Old phone model is Samsung note 9 (android 10) and New phone is Honor magic V3 (android 14).

Thanks.

  @David-TP I have 2 factor authentication enabled on old phone.  I attempted to disable TFA on old phone and was unable - after entering password got a failed message.

Since I can log in on old phone it appears that the issue is the TFA in app on new phone.  After I enter password on new phone it attempts to validate with a picture puzzle - After sliding the puzzle piece it returns the message failed.  I would have expected a screen requiring the authentication code I received.

I also attempted to login on an Android tablet - same issues.

My phone is the standard Pixel 8 Pro

  @David-TP Working now - Thanks!