Grid Draw- Logo & Icon Creator funktioniert nicht

Grid Draw works using scalable vector graphics which means you can export your drawings as an image of any size without losing graphical fidelity.  Now with SVG and PDF support, Grid Draw makes it easy to create and share original, vector-based iconography.  Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.  Grid Draw Full Version is a 1-month auto-renewable subscription.  Account will be charged for renewal within 24-hours prior to the end of the current period.  You can turn off auto-renew up to 24 hours before your next subscription payment is due via your App Store settings page.  In addition to built-in cloud sync, you can save backups of your drawings as simple JSON text.  Payment will be charged to iTunes Account at confirmation of purchase.  Build your own unique creations and share them with the GridDraw community, or keep them private if you choose.  Browse a growing collection of vector art created by artists from around the world.  Sign in to sync your personal collection across all of your iOS, MacOS and iPadOS devices.  It's great for creating any type of art that requires perfect symmetry such as icons and logos.  And it works great with the Apple Pencil.  Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.