Posts appear undated in WordPress apps

I use various apps between devices to write and edit posts on my devices, but recently all of these apps have been showing all posts to be undated, causing the posts to appear randomly ordered. I’ve tried using Posts, Poster and the official WordPress apps, and all of them face the same problem. However, my WordPress admin site itself doesn’t face the problem and works just fine. You can see what I mean in this screenshot if you want.

Does anyone know of a solution to my problem? It’s been quite annoying to have undated posts that appear in a random order in my WordPress apps.