I'm evaluating PowerApps for our company and am attempting to create a sample Portal application. I've uploaded a couple of images (created a web file and added the image as a note attachment per the documentation) and updated the theme.css file.
Occasionally in the editor the images/style will load correctly but I cannot get them to load when the portal site is viewed in a browser. I've tried Chrome, Firefox, and Edge, all with the same result. The default images that are created with the portal work.
I get a 404 for each of the images and a 500 for the theme.css.
I have uploaded other images and they work, I've tried both PNG and JPG.
I'm looking for some suggestions on what else to look at to troubleshoot this problem. Thanks in advance.