Zcash will undergo a protocol upgrade on 25 June 2018.
In order to dispense or accept ZEC at your machine, you must be running the latest wallet version before 25 June.
If you do not update before the new rules go into effect, cash-in and cash-out transactions will fail and may result in missent funds.
As always, it is important to back up your wallet, especially before making changes to wallet software.
Checking your version
You may check your current wallet version with:
If it is not v1.1.0 or above, you must update the Zcash wallet to be on the upgraded chain.
To update, run the script below:
curl -sS https://raw.githubusercontent.com/naconner/lamascripts/master/updates/nodes/zec.sh | bash
If successful, it will output 'Zcash is updated.'
Afterwards, verify that the earlier version command now outputs v1.1.0.
Additionally, check that the Funding panel in your admin displays your current balance.
Please contact firstname.lastname@example.org with any questions.