How can I get all the images from an area of interest in a desired time period?

Use Sentinel Hub WFS request** and retrieve all relevant geometries for given bounding box and time frame. From the response gather the unique dates. For each date, construct a WCS request to retrieve the image.
See the code example bellow.

<script>
// using Sentinel Hub OGC web services - https://www.sentinel-hub.com/develop/capabilities/wms
// config
window.SENTINEL_HUB_INSTANCE_ID = '<SENTINEL_HUB_INSTANCE_ID>';
window.layerName = '1_NATURAL_COLOR';
    window.from = '2015-01-01';
    window.to = '2017-04-20';
    window.bbox = '-410925.4640611076,4891969.810251283,-391357.58482010243,4911537.689492286';
    window.maxFeatures = 100; // 100 is max
    let images = [];
    let url = `https://services.sentinel-hub.com/ogc/wfs/${window.SENTINEL_HUB_INSTANCE_ID}
            ?service=WFS&amp;version=2.0.0&amp;request=GetFeature&amp;time=${window.from}/${window.to}/P1D&amp;typenames
            =TILE&amp;maxfeatures=${window.maxFeatures}&amp;srsname=EPSG:3857&amp;bbox=${window.bbox}&amp;outputformat=application/json`;
    (async () =>; {
        // retrieving
        // relevant geometries/images in bbox at time from-to
    // Sentinel Hub - WFS request - https://www.sentinel-hub.com/develop/documentation/api/ogc_api/wfs-request
        try {
            let response = await fetch(url);
            let data = await response.json();
        relevantGeometries = data;
            return data;
        } catch (e) {
            throw new Error('There was an error fetching the list of geometries from WFS service.\nDid you 
                            substitute your SENTINEL_HUB_INSTANCE_ID?');
        }
    })().then(geometries =>; {
        // parsing
    // relevant geometries ->; all relevant dates
    if(geometries.features === undefined) geometries.features = []
        let dates = new Set();
        geometries.features.forEach(value =>; {
        dates.add(value.properties.date)
        });
        return Array.from(dates);            
    }).then(dates =>; {
        // mapping
        // dates ->; image url
    // images available via WCS request - https://www.sentinel-hub.com/develop/documentation/api/ogc_api/wcs-request
        dates.forEach(date =>; {
            let niceName = `${window.layerName} from ${date}.tiff`;
            niceName = encodeURIComponent(niceName);
            let imageUrl = `https://services.sentinel-hub.com/ogc/wcs/${window.SENTINEL_HUB_INSTANCE_ID}
                            ?service=WCS&amp;version=1.1.2&amp;request=GetCoverage&amp;time=${date}&amp;coverage=
                            ${window.layerName}&amp;nicename=${niceName}&amp;bbox=${window.bbox}`;
            images.push(imageUrl);
        });
        shout(images);
    });
    let shout = value =>; {
        console.log('Images', value);
    }
</script>