Further diagnosis of this issue requires local access:
For Beginners - How-to SSH to RPi - Setup Putty in Windows
What is the address you are trying to access SkyView?
Can you press Ctrl-F5 on the page, i’d like to check if it loads at all without the cache.
Anyway, might be easier to just use a fresh image.
For Beginners - How to Get Back Existing Station Number in A Fresh Install