IronVape's learned it the hard way list for dealing with Jaxx wallet issues.
Rule number one:
wait (24-48 hours), don't keep trying to update balance, don't keep switching between coins. And Don't clear the Jaxx cache.
Rule number two: reboot the phone. (the symptom you are reporting sounds like a phone reboot will fix it.
Rule number three: if 1 and 2 don't work, clear the Jaxx cache, and (one coin at a time) initialize the wallets and wait for full and correct balance and transaction history before initializing the next coin.