All board on app not loading but work in browser.
If by app you are referring to the Miro desktop app (and not the mobile or tablet app), you could try resetting the app data by following these steps:
https://help.miro.com/hc/en-us/articles/360017572854-Desktop-app#h_01EVGAY54JY5E9S7J62FRCX6D4
If you are still unable to resolve the issue on your own, and you have a paid subscription, you could open a Miro support ticket by following these instructions:
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