Hi people! Was wondering if anyone came across the same problem and hopefully found a solution. After the latest hassio update to 99.3 my Community tab in the sidebar has dissappeared and I can no longer access HACS and the addons. I have tried deleting the HACS integration, but it did not work as after restart the integration is still there. I have tried deleting hacs folder in the custom_components but was unable to as I got Errno 39: Directory not empty. Same goes when trying to delete any of the folders in the custom_component folders or the custom_component folder itself.
Try doing a refresh on the browser (ctrl-F5 in chrome). I think I had that once and a refresh got it back.
I think you must delete hacs files under .storage directory.