We are mainly responsible for Microsoft Teams app development related issues.
For Microsoft Teams product issues/failures your tenant Admin can reach out to Microsoft 365 Product Support.
For general questions about Microsoft Teams please post your question on Microsoft Teams Community.
@TekanePhasha-9775 - In second image you are getting one error related to outlook. You have to resolve this first. The error was not related to adaptive card.
@NITIN-SALI - Could you please refer below doc:
https://docs.microsoft.com/en-us/MicrosoftTeams/teams-recording-policy
@SimonNTT - Is the app allowed in organization level?
To check setting please refer below document.
https://docs.microsoft.com/en-us/microsoftteams/teams-app-permission-policies
@SimonNTT - Could you please enable the sideloading and upload the app again? and let us know if its uploaded or not?
@SimonNTT - Could you please check with your Teams admin that you have the permissions for adding app or not?
@GONZALEZTHOMPSONJORGEGILBERTO-5574 - Could you please confirm is your issue resolved or are you still facing this issue?
@GONZALEZTHOMPSONJORGEGILBERTO-5574 - Could you please share the error which you are getting to investigate the issue further?
@ox1ygen - There is already bug raised for this issue. We will let you know once we have any updates on it.
@12345abc-6168 - Could you please check if you are getting same behaviour when you upload the app from Teams admin center?