Gene set enrichment tab in Bulk Expression Atlas is not working

[ke4]

In Bulk Expression Atlas on the home page there is a tab called Gene set enrichment.
If we go to that tab and try out the example search it is not giving us any result just an error message:
Error: 400 No significant contrasts found. Try adding more than 19 gene identifiers.
We get the same result if we type a gene ID into the search field and click on the Search button.

After we did a bit of investigation we found out that the project that contains the API for this feature has been removed.

We need a decision if we need to recover this feature
OR
remove this tab/feature completely from the web app.