Wanted to let you know, I looked it up and finally found something saying it was incompatible with Bluetooth 4.0, so I went on amazon and got this 5.0 bluetooth adapter. https://www.amazon.com/Bluetooth-PC%EF%BC%8CTechkey-Computer-Wireless-Headphones/dp/B085LB5Y8M/ref=cm_cr_arp_d_product_top?ie=UTF8

Works for me and now I can make calls with my desktop (although the sound quality both ways sounds kinda bad)

Bluetooth Number Pad, Alcey Wireless 22 Keys Multi-Function Numeric Keypad Keyboard Extensions for Laptop/Desktop/PCs/Notebook, Cool Gray https://www.amazon.com/dp/B07QTHXQKK/ref=cm_sw_r_cp_tai_BcxvFbQ5FDM2C

Keep an eye on the price. Looks like it went up

Edit : for anyone with a cheap diy pc without Bluetooth. Thus works great too

Bluetooth Adapter for PC，Techkey USB Mini Bluetooth 5.0 EDR Dongle for Computer Desktop Wireless Transfer for Laptop Bluetooth Headphones Headset Speakers Keyboard Mouse Printer Windows 10/8.1/8/7 https://www.amazon.com/dp/B085LB5Y8M/ref=cm_sw_r_cp_tai_AdxvFb5N4P5VT

https://www.amazon.com/gp/product/B085LB5Y8M

This is what I currently use