Wio LTE (US) board manager setting & failed uploads

I am trying to use the Wio LTE (US) with the Arduino IDE. I have experience with the IDE but none with Wio LTE.

If I use: https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json in board manager and then search for Wio LTE, it doesn’t come up. But if I just search for Wio and install the latest version for the first item, I can select Wio LTE Cat.1 in Boards, compile, but upload fails.

I tried this in board manager instead: https://raw.githubusercontent.com/Seeed-Studio/Seeed_Platform/master/package_legacy_seeeduino_boards_index.json and picked Wio Tracker. That will compile and also upload to the Wio LTE device. But sending SMS doesn’t work.

What is the correct location for use in Board Manager?

Hi, can you tell me the SKU of the product or a link to the details?

WioLte - USA Version SKU: 102991021 Board: Wio LTE Cat.1 v1.3

I was able to find this board definition: http://www.seeed.co.jp/package_SeeedJP_index.json which lists the Wio LTE Cat.1. Once installed and selected, the sketch compiles and will load onto the Wio. However, when switching back from DFU/BOOTLOADER mode to COM port, it now shows up as an Unknown Device in Device manager. Before using this, it would show up under Ports as a COM port.

Is this the correct entry for Board Manager, and how do I get the “normal” COM port back?