Hi Zollybosher thanks for posting the great question!

I think what you are experiencing is just the sound of brand-new strings, which always have sort of a 'twangy' sound at first. It should go away as you break the strings in a little bit.

It's also normal that you will need to re-tune more frequently with new strings. They need to stretch out before they will stay in-tune, so at first they will go flat more quickly.

Don't worry, this is all normal. Let us know if you still have the issue after a week or two of playing.