How to use message Function and where are the member letters (Pixiv Fanbox)

I think many members are not familiar with the operation of FANBOX. This makes me answer the same questions all the time. Please see the pictures I attached to understand these functions. 1.When you have any questions, please send me a message 2. I will send a membership letter at a certain time every month (I can’t fix the time and send it too early because many people haven’t become members yet, so they won’t receive it. The current habit is about the fifth day) when I send it to you,Your mailbox will receive a notification sent by FANBOX. There will be a link to your PIXIV MESSAGE BOX. All notification letters will be in PIXIV's MESSAGE BOX. Of course, if you happen to avoid the time when I send it, you will indeed not receive it. Then please MESSAGE me and ask for it. I think I will post a few more member letters in a month. The letter will try to cover most of the members, but please understand that doing these trivial tasks and answering various questions will really consume a lot of my creative time, so I hope to make some trivial tasks semi-automatic as much as possible.