Safabrew wb-06 fermentation issues?

I brewed my first ever AG American Wheat beer. The Brew day went great. Hit my target OG right on the nose. I rehydrated a package of Safabrew wb-06 and pitched it. Fermentation started nice and quick. There was a good deal of blowoff as I used a 5 gallon carboy. Fermentation the ceased for a couple days straight. After trying to give the carboy a nice jolt to see if it would start again it didn't) I bought another packet of wb-06, rehydrated it, and pitched it. Fermentation started again and continued (slowly) for the next couple days. It seems fermentation has stopped (2days ago) , and I took a gravity reading today.

The numbers:

temperature of baement: 70
OG: 1.046
Stuck gravity: 1.026
current gravity: 1.016

this puts me at 4% abv. Am I getting bad batches of yeast or will wb-06 just not go any lower on the hydrometer? Ive never used this strain before....

Do you recall what temp you mashed? or have your ingredients? there are a number of factors to consider as to why it finished that high. I don't have experience with that specific yeast, but looking at the specs listed on their site: http://www.fermentis.com/fo/pdf/HB/EN/Safbrew_WB-06_HB.pdf it says final gravity will be high, so that may just be the strain (but again, mash temp and ingredients will contribute as well)

At 1.016, it's not stuck, nor is the yeast bad, the beer's simply finished.