SANDISK 128GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, 5K, A2, Micro SD Card - SDSQXAA-128G-GN6MA

I had a similar issue a week ago, I listed my steps that worked for me here; https://www.reddit.com/r/rgds/comments/1u9djr9/cant_get_rocknix_to_work_with_the_rgds/osfsg6r/?context=3 If it still doesn't work, I'd put a tenner on it being the SD card. This was mine, for what it's worth. https://www.amazon.co.uk/dp/B09X7BK27V?th=1

i personally use this 128 gb card i repurposed from a camera, but aside from transfer speeds, any card should work fine