nextcloud Remote address?

“Removed address” is a somewhat unfortunate translation. The original handle is “remote address” – this is the address of the computer that has called the website.

The configuration of the web server and/or Nextcloud is faulty. To find the error, you need to look at the logs. There is the log file from the web server when you use Apache:

/var/log/apache2/access.log
/var/log/apache2/ssl_access.log

The first file logs HTTP accesses, the second HTTPS accesses.

The PHP logs could also be interesting:

/var/log/php7.4-fpm.log

where the 7.4 must be replaced by the PHP version you use.

And of course the protocol file of Nextcloud itself:

/var/www/nextcloud/data/nextcloud.log

The paths all relate to the standard configuration.