Resize images

Hello,
I have installed the TwentyTwenty plugin and it’s working on my site. The issue is that is adding a size to my images url like this: …/forest-banner-300×55.jpg. So it’s resizing my images to that tiny size.
Does anybody know how to remove that and get the real size of the image?
Thank you in advance!

https://wordpress.org/plugins/twentytwenty/