Blender killed outlet?
That one may be a builders grade .99 special get a spec grade for 3$ they are heavier and you won’t have the problem any longer. In past positions I had to test outlets (hospital electrician) now they use hospital grade outlets crazy expensive but they last longer and have a higher withdraw force than new .99 specials, the spec grade have very similar withdraw rates as the hospital grade. I mention the 3 basic grades because they all wear out but the cheap builders grade fail much sooner than the other 2. You know the blender is good it works in another outlet, get a new quality outlet, turn the power off and replace it.