It's really not hard to look up the ToS and specifically see what could be the problem.
ToS:
(link:
https://support.na.square-enix.com/f...6&id=5382&la=1)
Intentional leaving or disconnection:
(This is a little bit more open, since it's not clear if it only applies to actual DC or just leaving the instance.)
[HB]
Refers to the act of obstructing another person's gameplay by intentionally leaving the game or disconnecting from the server.
Key Points
Since the game relies on internet connectivity, it is inevitable that there will be network disconnections or real-life circumstances which prevent you from playing the game. As such, simply disconnecting or remaining inactive in the game will not result in a penalty.
However, if a report is filed, a penalty will be issued if the following types of situations are confirmed to be occurring repeatedly:
Occurs right after entering a duty
Occurs when progress is not going well in a duty
Occurs when the team is about to be defeated in PvP
Even if there was no intention to interfere with others,
repeated occurrences can be a nuisance to others. If you are experiencing network instability, or if you are frequently unable to play due to real-world circumstances, be considerate of others by refraining from participating in the duty/content, taking into account that you may unintentionally cause issues for others.