So we got this screen here with a beautiful greyed out button and one might be excused if they think this means you can not click that button:
Even the cursor implies “can’t touch this”:
But who are we that we let a mere bit of software dictate us what it is that we shall and shall not do? Exactly. So we go ahead and click that button nonetheless:
And hooray! The button that tried so hard not to get clicked gave way and allowed us to proceed!
On a more serious note: Say you want to change your plan from monthly to e.g. lifetime without changing the tier. You find yourself at a loss since the only button that would make sense to press camouflages as something that does not want to be bothered. Frustrated you decide maybe they don’t want your money after all. The End.