No worries about tax its paid by them.

cancel and dispute through paypal. it may take a few weeks to get your money back.

Down load the app and manually enter the sales until you figure it out.

She’ll be happy with an apology. And maybe a cookie.

Ups does it for me.

In my experience you need to spend a ton on advertising to make any significant sales on etsy. It would be worth it to do pop ups at multi day markets. Have your etsy address on your business card so when you interact with customers you can hand them out. Once you get a good customer base then go on Etsy.

Regarding pricing. Price item. Keep the price the same as your Etsy shop but give a 20% discount. You still will make a bit more than what you make on Etsy due to your free shipping, Etsy’s commission and the cost of packaging . Or Buy 2 at regular price get third 50% off. People love deals.