Seems like you need to update one of the certificates…
Just verified that the certificate has expired:
depth=0 CN = mqtt.power.sixfab.com verify error:num=10:certificate has expired notAfter=Feb 8 14:19:00 2021 GMT verify return:1
Thank you for pointing that out, this issue is fixed. Can you check it, please?
Yeah. It started working again a little while ago.