I have been trying to upload several layers which include domains on certain fields so that I can use drop down menus on my Crowdsource Reporter app. However, upon uploading and getting them to work with my Crowdsource Reporter app, the drop down does not appear. I went into the definition of my hosted layer and saw that the field domains have been assigned as "null". Here are some photos pointing out my problem.
Snapshots of the Field Properties page to prove they've been assigned the domains:
And of the Domain Properties to prove they've been assigned to domains that exist: