I have a TCL A600DL phone, and recently I've been having issues with Google Messages being able to download images or other attachments. The last time I was able to receive an image without issue was April 26th of this year (2024), but now when I'm sent an image or video and I tap to download it, the icon just continuously loads over and over until eventually I get the "Message/Attachment from [name] could not be downloaded or received." And if I've already tried to download the attachment previously, it will say "Not availiable" under the sender's contact when I'm previewing all my messages.
When I have that happen, it's usually someone (I'm guessing on iPhone), sending an attachment to a group thread. It shows up in the group thread, but then it'll pop up in that person's individual thread and give me that warning. Not sure if that's what's going on. I think it also sometimes happens if I'm using the browser on my desktop for messages.