I am in the same situation. Was finalising app for presentation at 14:00 this afternoon (UK time), web editor suddenly crashed and now I have no connections available at all. This potentially could "kill" the project before it starts if we cannot be sure of platform stability.
Existing connections won't work
Can't add new ones.
Status page says "everything is working fine"
Feedback on most things I try is "The gateway did not receive a response from 'Microsoft.PowerApps' within the specified time period."
Don't worry it is not a problem with you it is with Microsoft, don't change anything and after a few hours or a day everything will work again.
Hey Microsoft this is the second time this week that this is also happening with me! We are also going to launch our apps this comming Monday and this is bad. It is to random and the downtime is to long.
Also having this problem in Belgium.
Having the same issue still here. Was working last night and then the app and associated MS Flows are all failing as unable to connect to the data source. Microsoft need to update the status of this and also I notice updates were made to the PowerApps studio with little notification of the changes.
If we're going to start building business processes on PowerApps and Flow for ourselves and clients then stability is a must before any new features!
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Features releasing from October 2020 through March 2021