Jetpack Mobile App unable to remote post

I have been trying to use the JetPack mobile app to make a test post to my blog from my Android phone, but it gives me errors. (The blog is not hosted on Worpdress.com, if that matters.)

When I try to post with an image included, the image gets uploaded to the media library, but the post has an error and states, “We couldn’t complete this action, and didn’t publish this.” It never shows in the drafts on my PC either. I just tried to add a post from my phone without an image, and it just stuck for quite a while and then said, “We couldn’t publish this post, but we’ll try again later.”

I really have no idea why this is not working. I know it is connecting to the site because the images appear in my media library. I tried another remote posting plug-in and it had some problems too, and eventually, I was able to get it to post words but not the images (which also would be put in the media library, but not the post.). I deactivated and removed several plug-ins and have very little running right now. It seems to be something with my settings I guess but I can’t figure out what!

The page I need help with: [log in to see the link]