Hello, I'm having a lot of problems with SD cards. I started with 3 audiomoths and 3 kingston SDHC 1 cards 32GB, all three worked and I got data back after my field work days. The second trial of 4 days, one produced no audio recordings and the other recorded for one day and then stopped after that. One worked fine and I have data, this SD card is still working well in the devices. Both these SD cards, the one that produced no data and one day worth of data have data on them but I just cannot delete anything from them, it takes minutes to delete one file and they now do not record anything when I put them in the audio moths, they flash red for a minute as if they are recording then stop for about 20 seconds and when you put them in to check the data there is nothing on them. I have a sandisk ultra 64GB SDXC1 that refuses to be recognised by the devices, it just flashes green and red and I just brought a Toshiba SDHC 10, this is even stranger, it flashes and records for one minute each time for put it in and set it on custom or default and then just stops recording, although the red light flashes faintly still. Its not the audio moth as im getting the same results what ever device I put them in, its the cards. What am I doing wrong, I formatted them first and Im only recording at 48 khz. Help me what am I doing wrong!!!