OH3, Mobile & BasicUI

Since a couple of weeks ago, I had an iPhone and an Android mobile that were connecting to myopenhab.org, login with “mymail@gmail.com” and showing “MySitemap.sitemap”, correctly using the APP.
Now, it only works if I’m connecting locally (same network) and using user&password from initial setup of OH (I had upgraded to OH3, without any improvement in this direction…), while trying to connect to remote, no error but no sitemaps to chose from…

Any hint?