Hello Daniel,
Thank you for posting in Microsoft Community.
I appreciate you raising this concern to us and I understand the need to have a Type Cover or keyboard for your Surface Pro 7+. You got me here, we'll definitely sort this out together. Before anything else, allow me to ask a question.
- May I know what type of keyboard you are trying to purchase? Is it a Type Cover or a Bluetooth keyboard?
Basically, the original Type Cover for the Surface Pro 7+ does not use Bluetooth to communicate with the tablet. Instead, it utilizes a proprietary magnetic connector that attaches to the bottom of the tablet. Thus, the Type Cover for Surface pro 7+ does not provide power nor transfer data through Bluetooth. Please check this link to know more about the Surface Pro Type Cover: Microsoft Surface Pro Type Cover | Surface Pro Keyboard - Microsoft Store
On the other hand, if you wanted to purchase a Bluetooth Keyboard that is compatible to your Surface Pro 7+, you can also check this link Buy Surface Bluetooth Wireless Keyboard - Microsoft Store.
Wish you all the best and hopefully this helps!
Best regards,
Rolando S.