Every important questions you might have on NexoPOS are answered here
These is no difference as both are the same software. When you purchase NexoPOS on CodeCanyon, you receive a coupon or gifted product from our marketplace.
Yes, NexoPOS is free and you don't need a license to start using. However, license terms applies. Refer to the License on the github repository.
Credit purchased on the legacy platform cannot be refunded. However, those credit can be turned into a coupon to use on the marketplace.
Unfortunately, license cannot be transferred to other users.
No, we support only two major version from the latest stable version. If the latest version if 6.x, we support 5x versions, not 4x and prior.
No, if the core of NexoPOS has been edited, we cannot provide support on that version. Note that this doesn't void the license. But, instead it can only be made on the original version.