Hi @Vinod,
This sounds like a caching issue. Please try temporarily deactivating your caching plugin then test if the images load as expected. If so, you’ve found the issue!
You’ll likely need to exclude caching for logged-in users. Not all caching plugins offer this option as standard, but you can use the following code snippet, if needed.
Code snippet to disable caching for logged in users
I hope this helps!
Cheers,
Chris 