Why does my banner photo have poor quality on Shopify?

Store Design
1

Pleaaaaseeee help my banner photo is bad quality, I try everything also the correct settings of the indicated px. This is a reason to don’t work with shopify.

I’m getting crazy, I buy wearhouse for 300 dollars and the photos look bad. This is very sad.

2

Hello there @Glennbosmans I can help you correct this. Send me a direct message with your website URL

3

Thank you, it is ok now!

Can you help me with my next question?

want to make the text of my announces bar move, how do I do this?