Hi,I have the disc version of Divinity 2: Ego Draconis and have some questions in my mind.

1 - If I buy the Flames Of Vengeance expansion from the Larian Vault, will I encounter with a problem or incompability?

2 - Like Gothic 4, only one time activation is enough to play the expansion or the computer must be connected to internet everytime I launch it?

3 - And final question: after installing the expansion and activate it, do I have to insert original disc every time I launch Divinity 2?