Notifications Not Showing on Web Page

I have the same thing with "nothing to see here", and need to push the arrow under the left side of the page, heading saying MESSAGES. Then all 900 of my messages load, taking a long time. I'm unable to delete message notifications and messages.

On the phone, I do see the list of notifications. If I press my finger and hold it, the entry will be marked ... and then can be deleted or can just lightly touch other entries to mark them before deleting them.

I can select a vendor and view their message but not really any other messages.

The phone app stopped letting me delete notifications. Instead, I now can use the edit option on the phone and mark the notifications to be archived. Once they are archived, I don't see them anywhere.

Some notifications are coming through now. I can see them and respond on the web page.

The approach I took earlier using the phone app stopped working (for the most part). The work around I had then was to mark notifications to send to the archive. At that point, they disappeared. I'm okay now.