the site works fine, but we cannot login to the admin page.
Steps taken already: - cleared cache and session directories - deleted cache and session directories - (bravely! - ref https://stackoverflow.com/questions/4280049/how-can-i-fix-the-unsecure-base-url-on-my-magento-installation) removed 8 rows from ..core_config_data, namely all keys with path secure/base EXCEPT the root unsecure/base and secure/base keys.
We are not the developers of this page, just the humble hosters moving the site to Digital Ocean.
Thank you in anticipation of your inspired genius.