I'm not (yet) an app developer at all. I started by just using a sample to create me a JavaScript-App and deploy it via "app.netlify.com/drop". Thats was it, to get an idea about it. I used the sample, as is - but of no use for me, and this one still works without problems. Now I started by adding function to it to call my shelly devices. See here, how it is meant for just one shelly-device
<script>
let fountain = 'http://shelly1pm-E8DB84D7EDED.fritz.box';
function Shelly (shelly) {
window.location.href = shelly;
}
</script>
<body class="background-dark">
<div class="center margin-top">
<a href="javascript:Shelly(fountain)">
<img class="icon" src="img/fountain.jpg" alt="Fountain" >
</a>
</div>
The app works few hours but now, a day later, I just see the message "This site is suspended". I stopped it and started again, I switched off/on the IPhone - nothing helps. Any idea, what this might mean and how to solve it - or whom to ask?