After downloading this how can I test

No boss you can test it with test credit card just Test cards

However you need to keep the plugin in sandbox mode there is settings of plugin to check on checkbox if you want to keep in sandbox than you can test it with test cards

Ok thank you. I saw something about refunds if someone wanted a refund would I be able to issue it? I would do it through stripe correct?

No you can issue refund directly from WordPress admin on order detail page and internally plugin calls API for refunds and fund is refunded so you don’t need to login stripe

I cannot test I get this message
“This API call cannot be made with a publishable API key. Please use a secret API key. You can find a list of your API keys at https://dashboard.stripe.com/account/apikeys.”

Use secret key on plugin settings page you seem to use publishable key

I am using secret key i changed to publish key and get this Merchant do not support accepting in unknown card

I am unison of the testing cards and making up my own expire date and cvc code

ok seemed to work now

Let me know if still you face issues

ok thanks one question do I need webhooks?

if you want to do or achieve that is not available through this plugin you need a web hook other wise not

But this plugin will only work on woo commerce installation setup and send an email from stripe to customer email as well invoice from wordpress will also go to customer