Are you the owner of this onelink.to link?
Instead of showing this page when someone uses your onelink.to link from a device without a download link, add a fallback URL. Then we will send all other devices including regular web browsers to that fallback URL.
When the onelink URL is not registered to an account, fallback links will not to be automatic. This is a security measure to deter uninteded use of the onelink.to service.
With onelink.to you get one link or QR code to your app, no matter if it's on Apple AppStore, Google Play, or on another app marketplace.
Instead of printing several QR codes or having several separate links, you only need one QR code or link.