If you look at my posts from last week, I had exactly the same experience with VPOR.
I bought 100k of shares without issue, but part of that 100k purchase showed up as a 'sell' on the Level 2, when both transactions were buys. I couldn't figure it out either.
When I asked the board, I was told something to the effect of 'don't trust Ihub L2'.
But if you had the same experience, then I wonder how many more buys are showing as sells?