I'll start with the missing facilities first. It sounds like you filled out the x and y fields in the FacilitySource CSV table which is good. When you appended the FacilitySource CSV table to the Facilities Hosted Feature Layer, did you check to make sure all of the fields were mapped properly? Specifically, the longitude and latitude fields need to be mapped to the x and y fields, respectively, as shown below (this is not done automatically). Also make sure you didn't mix up latitude/longitude and x/y, I still do that from time-to-time, this includes ensuring that your values are in decimal degrees and positive or negative depending on which hemispheres you are plotting data. This can cause issues if not done correctly.
Double check this step. If done properly, your points will be automatically added and plotted within the Facilities hosted feature layer. If you open the Facility Status Reporter web mapping application (also included with the solution) you will see your facilities appear on the map.
Note: If you already tried to append your CSV table to the facilities hosted feature layer previously, you'll want to go into the facilities hosted feature layer and delete those old records that were incorrectly appended.
As for the Facilities Status Report survey, this is not intended to be filled out on it's own like the the Individual/Team Check-In surveys. Instead, the Facilities Status Report survey is supposed to be accessed from the Facility Status Reporter web mapping application. Once you get your facilities mapped, you'll be able to search for a facility in the Facility Status Reporter web mapping application and it will give you a "Submit Status Report" button to click that will take you to the Facilities Status Report survey and automatically fill out the first question for you about the name of the facility. Below is an example of a facility called "Test" that I clicked on and it has the "Submit Status Report" button. When I click on it, it takes me to the Facility Status Report survey and the name "Test" is filled out for me.
Once you complete the survey, the results will be reflected in the Facilities Status Dashboard.
One last point, I think you mentioned this in your initial post, but just to be certain, please make sure you followed the steps found HERE where you have to copy and paste the Facilities Status Report survey's item ID into the 3 arcade expressions.
Hopefully this does the trick!