Hi,
If your WordPress is in French, please make sure that you’re searching for blocks in French or try typing HivePress first. If it’s not the case, ensure you save the page after creating the template and then select the template from the dropdown menu on the right.
For hiding date of publishing, please see this topic:
To display attributes, please make sure that you have assigned them to display areas. Please see this article to find out more about Display Areas: How to add listing attributes - HivePress Help Center
Hope I helped with your request.