When processing test order it only briefly shows the popup screen

Hi

Just setting up your plugin and testing things.

When processing test order it only briefly shows the popup screen (white screen cannot see any text etc), then the whole checkout screen goes white whilst it is processing, then finishes and completes the TEST ORDER.

It still completes the order, but don’t like the white screen and you think something is wrong. Doesn’t look right. Need to get it working for my client.

I have used other Stripe plugins previously and doesn’t do this.

I’m not sure whether there is another setting I have to choose. Please advise what could be causing this.

I have it on TEST mode, but also tried it on LIVE mode, same thing.
What can I do to fix this urgently please ?

Thanks
Kristin