Hello,
I checked your account again, and I can confirm no items are missing. Many items are in fact in storage.
I see you have 4 characters, each of them played for 1 day exactly (maybe 6-8 hours each day) and totally played 4 days here last year. It might not be sketchy to not have many items/equips in 4 days.
But as I said, check the storage (I see > 150 items stored there for your account, including usables, equips and etc items)