@abc That’s great to hear that it’s working again as it should! For the contact sensor’s LED flashing, this will happen occasionally when the device is “checking in.” Now, if the device is having to “check in” multiple times, this could be due to the signal where it’s at being weak, or other devices are “checking in” as well, making it try again.
To be on the safe side, you can reach out to our support team to verify this information, the sensor’s signal, and make sure that the contact sensor isn’t having any abnormal behavior, missing check-in’s, and overall seems to be working as expected! Otherwise, I would just observe it, and as long as there is still no excessive battery drain, it should be all good to go. 