image attachments on iMessages

This is screenshot of image file attachment on the iMessage. It shows a file icon with a question mark, an alpha-numeric identification of the file, and the file type its number of kb-mb. It also shows a download icon (a rectangle with downward arrow within it).

What I am thinking,  an Apple person familiar with file management, seeing the information on the attachment file could identify the problem, especially the download icon. 

My account with Apple has 200 GB of iCloud storage. This isn’t an extravagant amount of storage, but enough to  cover the iPads and iPhone, at this time. The iPad Pro has its own 2TG storage.

All of the screenshots here are of my iPhone iMessage (iPhone text app) as I found them in Settings, iMessage. I don’t see any settings here that would exclude the attachments on text messages or prevent the backup of the attachment images. 

I have discovered in the past few days, that my iPad Pro has iMessage, the same app that is used for text messaging on my iPhone. Could this be the problem? As I mentioned earlier, the text messages and their attachment images from the my former cellphone Pixel 5 had transferred over very well. Then, three or four days later, the images turned into blank file, as shown above. Could the iMessage on the iPad be causing the problem? Perhaps there was some conflict in the system, trying to synchronise the messaging of another device to the iPhone. 

I am wondering, has anybody in this Apple forum even read any of the messages in this thread? There is no evidence that the thread has even been published!

As I asked above, Can anybody tell me what happened to the image attachments on these text messages? Could this be because the same application as the application of my Texting - iMessage - is on my iPad Pro, and probably synchronized or backup when I had it started a few days later? I remember the Apple store contacted me through that application about that time.

The other possibility is there something in the iPhone Settings that could have excluded the image attachments on the iPhone? (screenshots above).

There is plenty of storage, both in iCloud and on the devices. (The iCloud causing the problem?)

Above screenshot of iPhone storage in the iPhone settings.

Why hasn’t somebody replied to my questions here? I am wondering if this has even been published?