Hi @vilp
Thanks for visiting our forum. Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is about PowerAutomate. In order to better help you solve this problem, we suggest you go to the PowerAutomate forum to ask this question. The following suggestion is just for your reference:
If you are using the Post card in a chat or channel action, you need to enter the Json format of the Adaptive Card in the Adaptive Card field.
First, you can edit the adaptive card you want here, and copy the Json format in the lower left corner directly after editing.
Please refer to the documentation on how to add a button that navigates to an app.
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