Are paypal payments valid for Zero rated GST ?

It should be Ok as per my view. 

Yes amount received through Paypal is valid for exports. You can get the FIRC through Citi Bank.

To understand the whole process of Exports & Refunds under GST and to ensure the smooth flow of refunds, click on the link below to watch the video : youtu.be/qU0rLgGJViM

For more details - CA Sachin M Jain .8O975. l5447 
1.WhatsApp : tinyurl.com/wCASMJ 
2. Facebook : tinyurl.com/FCASMJ 
3. Instagram : tinyurl.com/ICASMJ 
4. LinkedIn : tinyurl.com/LCASMJ  
5. YouTube : tinyurl.com/YCASMJ 
6. Twitter : tinyurl.com/TCASMJ 
7. Email : casachinmjain @ gmail.com