Hello,
I am having the same type of concern accessing my nextcloud server on a new mobile device (web or NC app).
I currently have access to my nextcloud docker, I can login via any PC web based URL internally and externally. My current mobile device (web and app) work fine.
attempting to access the NC server on any 2 of my other mobile devices (web or app) seems to time out.
I can ping the server internally and externally from the new mobile devices, I however cannot access the web gui or the NC app.
Any ideas what is going on?
EDIT
It seems on the 2 new mobile devices they can access the nextcloud server externally. However internally they cannot
All my PC’s and previous mobile device has no concerns accessing the nextcloud server internally or externally, I am puzzled