Sibananda Sahu

The actual issue was with my Nginx mime type config which did not have an entry for .apk file extension.
Adding that on my server conf solved the issue.

I guess you missed the last point.
When the cache was disabled the download was fine.
But when the Cloudflare proxy cache came in between again, the .apk files are now renamed to .apk.jar file extension.

I have tested the behaviour and found that without caching the .apk file is downloaded in .apk file only.
But now when the cache is again on, the .apk file is being downloaded as a .apk.jar file extension.

Can you please explain why is this behaviour is happening?

So, what is the action item that needs to be done now on my end or your end?

Thanks Tanvir, for your response.
There was a similar issue reported earlier:

Why lazy download is changing the extension name ?

But there was no progress made after that on that issue.

Can we use some IM app to sort this at the earliest?
Although it was an administrator account, I do not understand why does this not have all the access!
Anyway, I have modified some access. Can you please check now and tell me is there a difference?