Hyperledger Fabric + NodeJS app - Query but no Invoke

Here's an interesting situation...

I've deployed a Fabric network over two machines and I'm able to query and invoke transactions through cli.

I'm also using a NodeJS app with which I can query the network but can't invoke any transaction.

This error appears whenever I invoke from the NodeJS app:

"Failed to connect before the deadline". 

The logs from the node app:

[Remote.js]: Error: Failed to connect before the deadline
error: [Orderer.js]: Orderer grpcs://orderer.test.com:7050 has an error Error: Failed to connect before the deadline 

This is the template NodeJS app I'm using: https://github.com/olegabu/fabric-starter-rest

Any ideea what's wrong?

from Hyperledger Fabric + NodeJS app - Query but no Invoke