I have GrapheneOS on a Pixel 4a 5G. For the second time now, the phone suddenly stops submitting remote attestation, despite the interval being set to 24 hours. I do not get any errror message on my phone, I am made aware after 48 hours via the email warning service.
If I log in, the last verification was last Monday and the attestation before that was the preceding Friday. On my phone, the persistent notification simply said "successfully submitted 2 days ago" (or something like that).
Yesterday I set the interval to 12 hours and rebooted my phone, but the 12 hours have passed and I do not see any notification on my phone.
The last time this happened I ultimately had to remove the pairing and re-enable it. This is I think fine but I am curious why it seems to not submit verification anymore out of the blue?