Hi @randyroache welcome to the community!
I was not able to get Sandisk cards working in mine either, the reason why is because they are not made for the use case scenario. These types of cams need endurance rated cards, these cards are built differently to handle the stress of continuous recording cams. I would reccomend getting either the Wyze branded card, or the Samsung Endurance card - link below. I have both of these in different cams and they are working flawlessly. Here is a link for more information about the cards:
Here is the card I have been using with no issues:
Amazon.com: Samsung PRO Endurance 128GB Micro SDXC Card with Adapter - 100MB/s…
Wyze does not officially support any card over 32GB - however i have had no issues with the 128…so far 