Dropped from level 4 to level 3‽ Please help! (Choo-Choo)

This weekend I decided it was time to level up my SteamGifts account, so I hosted a set of giveaways to climb from mid-3 to level 4. I was happy to find earlier today that with five of eight giveaway recipients marking their prize as "Received", I was finally at level 4. 4.07, to be precise. But then, when I tried to enter a level 4 giveaway, I found that I had been dropped down to level 3.81. Does anyone know how or why this might have happened?
Edit: It would appear an extremely observant and helpful support staff member has probably solved this mystery. Onward and upward to level 4!

Well, enough complaining from me, what can you do to help? It's simple: my loss is your gain. I want to get to level 4 again, and I want to do it now. So please help me get rid of these bundle leftovers in the next few hours!

The train is now leaving the station for our first stop, a flight combat simulator...