All custom API connections were suddenly deleted since yesterday out of the blue

[TAPAuserll]

Hi,

It seems that something was changed on the Microsoft side that cause all my PowerApps custom API connections to be deleted since yesterday. I was working with my app yesterday afternoon and it was fine. Then I sent it out to the users to test and all my connections were deleted yesterday night. 

Does anyone know what happened? I tried creating new connections this morning but now I can't even sign in. It's giving me a "We receive a bad request' error. The error is below.

Can someone with insight knowledge help lend a hand asap?

Additional technical information:

Correlation ID: 4dd8d0ae-df41-482c-aeb4-5b5f498416a4

Timestamp: 2017-08-15 17:28:47Z

AADSTS70001: Application with identifier '53de4bb-cecb-486a-a3cf-e449b6a90a9f' was not found in the directory aff3442b-5f55-409c-be77-da97b366435a

[v-yamao-msft]

Hi TAPAuserll,

What’s the current PowerApps version on your side?

Not sure if it is a temporary issue related the latest update.

Please check it later and if you are still having the issue please feel free post back, I will try to report it from my side.

Best regards,
Mabel Mao