Do you know how to get life membership so that your toons can become life members?

Hi there. My toons on my Toontown Online account are C.J. DandyFlipper, Little Romeo Trickymuffin, Master Milton Mizzenmarble and Rico, with C.J. DandyFlipper being my best toon, at 103 laff and having completed training for sound, toon-up, lure and drop and having earned level 7 gags for/maxed out Throw, Squirt and Sound. I had a task a while back to defeat 100 5+ story cog buildings, but I never got to finish it because my subscription got cancelled! Which is why I'm asking if anyone knows an easy way to get membership for LIFE so that I can finish that task! If anyone DOES know a way to get life membership, PLEASE tell me! I'd greatly appreciate it! (I just really need to know how to get life membership so I can finish that task and a bunch of other stuff!)