Iām sure itās an overlook but for an organisation that champions user privacy, it doesnāt look good to serve blank pages just because the user has an ad-blocker.
@laurent Just to be sure, did you check the same page again later? Iāve noticed the site going down for brief periods several times this year, so you may have been unlucky in timing.
Otherwise: I currently have no trouble accessing or displaying the page you linked. I have uBlock Origin, Firefoxās built-in protection, EFFās Privacy Badger, and DuckDuckGo Privacy Essentials all enabled, with near-default settings. The only things blocked are cookies from YouTube and stats.nextcloud.com, which appears to be a Piwik analytics server hosted on the same IP block as www.nextcloud.com. Do you have any custom lists or settings enabled that might apply here?
For me it works without uBlock Origin but doesnāt with it (and still doesnāt). Iāve checked and itās due to the Annoyances filter which blocks cookie notices.
As far as I can see thereās no issue with the filter, and itās Nextcloud that should fail gracefully when this non-essential cookie popup script is not loaded.
However, the website clearly has no ads. And they shouldnāt have any 3rd-party tracking, so if there are issues, please contact them directly through the bug tracker.