One day there will be a better page here, but for now query signatures directly at the address bar. The URL format is

https://wort.oxli.org/view/{db}/{dataset_id}

where

• {db}: can be 'sra' or 'img'
• {dataset_id}: depends on the database. For SRA it's the SRA Experiment ID, and for IMG/M it's the taxon OID.