OLED screen not working in any libraries or sample codes

Hi, I just got an OLED screen made by heltec. The adress is 0x3C, and it has 4 pins going in to the breadboard, saying (Left to right), VCC, which I figured out is +. Gnd, Which I found was ground, SCL, Which I figured out was Clock, and SDA, which i figured out was the Data line.

When I plugged VCC to 5V, GND to ground, SCL to A5(What Wikipedia said was the clock line), and SDA to A4(What wikipedia said to do), and used the sample code found here:

https://github.com/adafruit/Adafruit_SSD1306/blob/master/examples/ssd1306_128x64_i2c/ssd1306_128x64_i2c.ino

which is what the dealer said to do, it came up with multiple errors. (Yes, I remembered to change 0x3D to 0x3C).

Here are some errors: sketch_jan31a.ino:50:2: error: #error ("Height incorrect, please fix Adafruit_SSD1306.h!"); sketch_jan31a:21: error: 'Adafruit_SSD1306' does not name a type sketch_jan31a.ino: In function 'void setup()': sketch_jan31a:57: error: 'display' was not declared in this scope sketch_jan31a:57: error: 'SSD1306_SWITCHCAPVCC' was not declared in this scope sketch_jan31a:70: error: 'WHITE' was not declared in this scope sketch_jan31a:140: error: 'BLACK' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawbitmap(const uint8_t*, uint8_t, uint8_t)': sketch_jan31a:174: error: 'display' was not declared in this scope sketch_jan31a:189: error: 'display' was not declared in this scope sketch_jan31a:189: error: 'WHITE' was not declared in this scope sketch_jan31a:191: error: 'display' was not declared in this scope sketch_jan31a:196: error: 'BLACK' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawchar()': sketch_jan31a:211: error: 'display' was not declared in this scope sketch_jan31a:212: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawcircle()': sketch_jan31a:225: error: 'display' was not declared in this scope sketch_jan31a:226: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testfillrect()': sketch_jan31a:233: error: 'display' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawtriangle()': sketch_jan31a:242: error: 'display' was not declared in this scope sketch_jan31a:245: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testfilltriangle()': sketch_jan31a:251: error: 'WHITE' was not declared in this scope sketch_jan31a:252: error: 'display' was not declared in this scope sketch_jan31a:256: error: 'BLACK' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawroundrect()': sketch_jan31a:263: error: 'display' was not declared in this scope sketch_jan31a:264: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testfillroundrect()': sketch_jan31a:270: error: 'WHITE' was not declared in this scope sketch_jan31a:271: error: 'display' was not declared in this scope sketch_jan31a:273: error: 'BLACK' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawrect()': sketch_jan31a:280: error: 'display' was not declared in this scope sketch_jan31a:281: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testdrawline()': sketch_jan31a:287: error: 'display' was not declared in this scope sketch_jan31a:288: error: 'WHITE' was not declared in this scope sketch_jan31a:291: error: 'display' was not declared in this scope sketch_jan31a:292: error: 'WHITE' was not declared in this scope sketch_jan31a:297: error: 'display' was not declared in this scope sketch_jan31a:299: error: 'WHITE' was not declared in this scope sketch_jan31a:303: error: 'WHITE' was not declared in this scope sketch_jan31a:310: error: 'WHITE' was not declared in this scope sketch_jan31a:314: error: 'WHITE' was not declared in this scope sketch_jan31a:321: error: 'WHITE' was not declared in this scope sketch_jan31a:325: error: 'WHITE' was not declared in this scope sketch_jan31a.ino: In function 'void testscrolltext()': sketch_jan31a:332: error: 'display' was not declared in this scope sketch_jan31a:333: error: 'WHITE' was not declared in this scope

Please Help! I don't want to have wasted money on this screen.

You have not installed the libraries correctly. They need to be in the libaries folder. Note the code errror messages have nothing to do with how you have wired it up. Get the code compiling first then worry about the wiring.