Uhm... No?
The requirement is to be level 11 (or above), the requirement of having 30 level is a bug in-game which should not exist.
I strongly recommend not to misguide players.

All Best,
Ormazd-Sama

Only some people experience this problem, most of people can get their access to this event on level 11.

So actually you do misguide people, if you would have wrote "Due to in-game bug some players can get an access to this event on level 11 or above, if you don't see this event in the "hot topics" it means you are experiencing in-game bug. In this case, you need to have level 30 in order to use your collected paper nets )

About some players experiencing it, and some do not... Well the other moderator wrote that info. Next time, try to focus...

Oh well, I just read the other moderator post which said "It's supposed to be lv11 but for some it shows at lv30." You can't really blame me, sad thing is... I don't think you (moderators) communicate with each other.. One tells one thing, the other says smth different...