car starts, but wont acelerate more than 1500rpm

[Katiehp0]

its a 2014 with less than 10k miles on it but what i notice is that, it wont acelerate up to 1500.. thinking it was in limp mode,, so i take out the battery for about 10 minutes put it back in and the check engine was off but the thing same thing happen. i also checked the oil. now im hoping its in valet mode or theft mode.. i dont know how to function those options cause i just got the car, ive looked everywhere for the solution and nothing has help.. some said it was maf sensor or throttle, which it isnt either. any ideas? please help!

also once im in the map mode, how do i know which one im in? i heard theres 5 so what is the order?
once i do get into valet or theft how do i change the settings?
ive read the manual of the car but i dont think its in there.