Navigation Update Issues

Hi. I have a 2017 Prius Prime Advanced. Toyota stopped posting navigation data update a few years ago. So I read the posts online and figured out that third parties are selling annual(?) updates on Amazon. I bought one for 2024. It seemed to have uploaded the new map, but when I drive to work, after a few miles of driving away from my house, the screen stops showing any streets. Is this because the upload from the microSD card is still in progress? Or did I not update the map correctly?