Backups not working on two of my networks

I can't get snapshot to work on two of my networks. I have 4 other networks on which it is working fine. I have compared the plugins used on the various networks to see if their was an outlier that could be causing the conflict, to no avail. Hoping I can get a new set eyes on the problem, I've opened up the support access. I block some IP regions outside the US, so if you can't get through, please report what geographical region you need me to unblock. Thank you.