One other thing perhaps, once you’ve unzipped the folders.
MyRoute, at least on my iPad, is a bit fussy as to whether the files contain a route or a track. In your second picture, you can see that there are two tabs: Route and Route-track. If, when you go upload the contents of the file using the Route tab, you get an error message. Try using the Route-track tab instead. It’ll all depend whether the original GPX file holds a route or a track or (maybe) both.