Microsoft Teams Adaptive Card Error: Unable to Reach App

[Davgaly]

Hello -

I created a Flow that used the Microsoft Teams Adaptive Card to a Teams User and Wair for Response. It was working fine, but suddenly users are getting the Unable to reach app. Please try again error. 

Does anyone have any idea as to why this would suddenly happen? Below is my JSON script. 

{
"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
"type": "AdaptiveCard",
"version": "1.0",
"body": [
{
"type": "ColumnSet",
"columns": [
{
"type": "Column",
"width": 2,
"items": [
{
"type": "TextBlock",
"text": "AWS/GCP Account Approval",
"weight": "Bolder",
"id": "Title",
"size": "ExtraLarge", 
"wrap": true
},
{
"type": "TextBlock",
"text": "You have been approved to create your AWS/GCP account(s). Please fill out the below regarding your AWS/GCP account(s). ",
"isSubtle": true,
"wrap": true,
"id": "acInstructions",
"size": "Large"
}
]
}
]
},
{
"type": "Container",
"items": [
{
"type": "TextBlock",
"text": "AWS Account Username",
"wrap": true,
"size": "Medium"
}
]
},
{
"type": "Input.Text",
"id": "acAWSName",
"placeholder": "",
"style": "Email"
},
{
"type": "TextBlock",
"text": "AWS Account Number",
"wrap": true
},
{
"type": "Input.Text",
"id": "acAWSNumber",
"placeholder": ""
},
{
"type": "TextBlock",
"text": "GCP Account Username",
"wrap": true
},
{
"type": "Input.Text",
"id": "acGCPName",
"placeholder": "",
"style": "Email"
},
{
"type": "TextBlock",
"text": "GCP Account Number"
},
{
"type": "Input.Text",
"id": "acGCPNumber",
"placeholder": ""
}
],
"actions": [
{
"type": "Action.Submit",
"title": "Submit",
}
]
}

[annajhaveri · Accepted solution]

@Davgaly  just see if there has been any changes in policies for teams

[Davgaly]

There seems to have been an unintentional policy change to the environment. Fixed now : )

[cgarib_tei]

@Davgaly Can you please share on how you get this problem fixed?, Step by step mini tutorial it would be great!

[Davgaly]

@CG - I contacted my IT department and they told me there was an unintentional policy change in my company. When they reverted back everything started working properly again.