Inventory missing!?

[Tsukimon]

I've never had this before but it seems like my entire NP inventory is gone. I've not emptied it and yesterday I had 39 items in it. Is it a glitch? And when I went to get some jelly I got this notification. I'm very concerned 

[baby_kisses17]

I had this happen to me the other day. I'm pretty sure it's a glitch. I waited a day and it was all back to normal

[Tsukimon]

Back up now but got freaked out.