I decided to to start with a fresh installation. Since I run Grafana in a Docker container it was not that difficult. I had exported the existing dashboards and imported them again in the new instance. Some manual work was needed, but not that much. So it was OK and I didnāt try other ways. But still āthank youā for the advice!
Actually I have that setup. but in this case it didnāt help since my idea was not: āletās try to delete the only user with full admin rights and see what happensā. It was just a mistake
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