Hi @Looft1 — welcome to the seller community and sorry to hear about the trouble with your reader.

It sounds like you're currently set up with the Square Magstripe Reader. Are you receiving any kind of error message when you try to swipe cards?

If you're still having any trouble, please give these troubleshooting tips a go: Square Magstripe Reader Troubleshooting.

Usually those resolve any issues right away — if not, please let us know and we'll have another look. Hope this helps! 🙂