Hi Jibon, thanks for providing this one for free

.
Can't get it to work though.
I get
"Error
UPS Error: This measurement system is not valid for the selected country."
Unless I change my customer's billing / shipping adress to United States (other countries might work too, haven't tried...). But even if changing to United States removes the error message, the UPS shipping options still don't show. I have tried various settings in the BE, same results...
I tried it on your demo site and all countries seem to work there...
Does your plugin require a US UPS account? I have a UPS account (Swedish), I requested the API key... I can search and create shippings from ups.com... So I'm wondering what I'm doing wrong here?
Truly grateful if you have any ideas!
Cheers
Peter