Unfortuntaely, the API/drivers for the 2200 series and 2200A series PicoScopes had to be assigned in a more unconventional manner. So, the ps2000Api is for the members of both the older 2200 series PicoScopes and newer 2200A series PicoScopes that are 2 channel, non-MSO, and have the smaller buffer sizes, i.e. the PicoScope 2204, 2204A, 2205 & 2205A. All of the other 2200 series Picoscopes use the ps2000aApi.
So, you need to use the ps2000Api.