If it didn't get any confirmations, then the coins are technically on your JAXX wallet. Can you post your address here so we can check if your latest transaction did get through on the network because If its on the block explorers, Then most probably the problem lies on your wallet. Their support are active on reddit
https://www.reddit.com/r/jaxx/So the problem is with Jaxx wallet not the network?
Post your address here or check it yourself on any blockexplorers e.g. blocktrail as Your balance there as well as transactions should be proportional in your jaxx wallet.
If not yes most probably the problem lies in your side. You should try resetting your cache on your
Menu -->
Settings. Please note that you should have secured your backup phrase.