Where did my calculator go?

This was one of the first Apps I bought for my iPhone. It was the HP-12C, original classic and although the iPad upgrade wasnt very exciting it worked. The latest update coverts it to a 12E? What is that? I tried switching it back to the Traditional layout, but it isnt a 12C. I wonder how many others bought something from this company and then got upgraded to something completely different.

BrentB67 about Calc-12E RPN Financial, v3.4.0