rakeshmukundan Thank you so much for the reply. I had not opened the ports on the Spotipo server. Everything works fine now!
P.S. I have now requested to test the Enterprise version as well. Could that be installed on top of the existing Spotipo version or will I have to set it up from scratch? Also, when I am ready to purchase it for my clients, can I use the installed version on my server by just entering the new license key?