why can't i buy another month of eso plus and have it add on to the 11 days i already have? I need 1500 crowns for a race change token today. so why am i forced to buy the 1500 crowns instead of another month of eso plus?
Because it's a subscription and crowns are rewarded upon subscription renewal.
No one, especially not ZOS, is forcing you to buy a race change token ...
"May you walk on warm sands."
"First, I would ask that you look to the poor and the suffering around Cyrodiil. Look into their hearts, and then look into your own."
"May Auri-El's light guide you in your darkest hours."