1. Top competitors
The first block lists the strongest competitors. For each domain you see the shared keywords, the number of top-10 rankings and the estimated traffic per month. That puts into perspective who you are actually up against in terms of content, which does not always match the list of known rivals.
When no data comes back
Two messages are not errors: there is no ranking data for the domain yet, in which case it is probably new or not indexed. Or no keyword gap was found, which means you already cover this market well.