After a bit of Raiding (joining a commander, becoming a commander and giving squad lead to someone else) I went back on my Main but was not able to write in the Guild anymore.
However, I can write in other Guilds I have on my acccount. I tried:
- Changing Guilds (obv)
- Rep and unrep
- Relog multiple times
- Switch to other characters (same there, cannot write in one guild but in the rest)
While writing this it occured to me that a whole game restart could fix the problem. And it did
Still strange though…