@Wrayman 

Hi. Thank you very much for the feedback.

May I know your current Deco APP version?

Have you reset the password of your TP-Link email ID recently?

Could you please refer to this link to help me submit the APP log?

How to submit Deco APP log

By the way, How often do you usually get this error notice?

Wait for your reply and best regards.

  @David-TP thanks for getting back to me, I'll submit the logs when I get off of work tonight but in the meantime:

• App version is 3.7.25
• I haven't reset my password since I set up my account
• I've probably received this error message about 3-4 times a day since Saturday morning. I've only opened the app once today but didn't get the "welcome" screen.

  @David-TP system log finally sent, I thought the issue had resolved itself until it happened again this morning so the logs should at least be fresh and have a record of the incident 

  @Wrayman 

Thank you! The logs have been forwarded to the engineers for further analysis.

There was a similar feedback yesterday.

https://community.tp-link.com/en/home/forum/topic/664082

It is very likely something wrong with the latest Deco APP.

Will update here as soon as any solution is ready.

best regards.