A new “Download records” page has been added today, and is available under the “Explore” menu. The new process is faster, has no limit on the number of records, and offers additional filtering options. You can also choose between the standard format (which is very similar to the csv downloads that have always been available) and a new simplified format (which provides a reduced set of the main biological record columns, and may be easier to work with).
Full details of the new process are in the Help section under using the new Download page.
In the Activities, if you use an "Activity summary" or "Explore activity records" view you will see that these have also been updated. Activities containing large numbers of records were beginning to fail to display, so moving them to the new system allows these pages to open up more quickly and reliably. However, a downside is that at the moment they only show records with 1km square dots. We will investgate options for improving the resolution of maps for smaller areas.