Create issue through API no longer works

[job breur]

Getting the details for an existing issue works (meaning: auth works):

curl --request GET \
--url 'https://casadesk.atlassian.net/rest/api/3/issue/12227' \
--user '<EMAIL ADDRESS>:<TOKEN> \
--header 'Accept: application/json'

But a POST with body like this (using Postman):

{

"fields": {

"project": { "key": "CASA" },

"summary": "test summary",

"issuetype": { "name": "Task" },

"description": "test description"

}

}

Responds:

{

"errorMessages": [

"You do not have permission to create issues in this project."

],

"errors": {}

}

---

Of course, user with <EMAIL ADDRESS> can create issue in jira manually through the web interface. And it worked until today.

Any ideas to solve are welcome!