Hi Giovani Favis,
on working with SVG images on Mendix native apps
some elements are un-supported on the svg and will experience an issue where SVGs are not visible in the Make It Native testing app.
When deploying changed SVG images, it may be necessary to clean the deployment folder first. In Studio Pro, click on App > Clean Deployment Directory. When recompiling, any new images will now become visible in the Make It Native app
have a look on this https://docs.mendix.com/refguide8/native-svg/