The link is working for me. Anyway, the presence of your deposit on this list just mean that it has been received by the system.
To confirm that it has been preserved, you’ve got to wait for a positive answer from the plugin or to query the status at The Keepers Registry. On this site you can input the ISSN of your journal, then on the next interface you can click on the Archival Status then Extent or archive, and it should show such information:
Best,
Jonas Raoni