Hey there,
sorry about the really late reply - I haven't really been active on my account due to the pandemic. You probably already figured it out, but if you are using a continuous servo, there is a high chance you will not be able to control the angle. Many of those servos use the fact that you only have to remove the potentiometer inside of them which disables the function of reading the position.
You are telling the servo to always go to a 90 degree angle, if you want the servo to go the the position specified in pos, you will have to change the myServo.write(90); to myServo.write(pos);.

Hello,
i want to make easy to use bot and found this... Before wasting my money... Is there any way to make a user interaction? (Ex.: if i type !help it sends a message with help)

Great idea btw! Keep it up :)

I am using ArduinoIDE, and the code is black here, because the colors are seen better on black. (Website setting)