Differences Between Nebula Gacha Online and Offline?

Hi everyone,

Before I start playing nebula gacha online, I want to know if it differs much from the offline version. Are there any special nebula gacha features exclusive to online play? The nebula gacha tutorial doesn’t mention much.

Also, should I reinstall using the nebula gacha install guide after the latest nebula gacha update? Any nebula gacha tips appreciated.