I just purchased a bunch of new cams and pan cams and have the exact same issue on 4 of the 6 V2’s I purchased. I haven’t unboxed the others yet.
I also haven’t unboxed the PAN yet. The camera’s don’t produce the chime when the card is inserted. I tried an SD card from a previous working V2 and it is not detected by the new cam and the sd card not detected in the new cam works fine on my previous V2.
Looks like there is a QA issue on this batch. Chat Support walked me through the regular checks of factory reset, etc, but nothing helped. They need to send out replacements.