Plugin button is not rendering sometimes

[bhavik4]

I’m managing a plugin to import CSV Excel Data. The plugin renders a button and clicking on the button opens the import widget. But sometimes the button does not get rendered, especially during Wi-Fi connection and Slow 3G internet connection.

Here is the URL: Bubble | No-code apps

I’m loading the button this way in :preview function,
function(instance, properties) {
$(instance.canvas).html(<button class=${properties.buttonClasses}>${properties.buttonText}</button>)
}

Any idea on how to make sure that button always gets rendered regardless of network speed connection? Thanks in advance.

[bhavik4]

The button below “Download Sample” is missing.