Downloading the iOS Litewallet and setting up a new wallet then sending LTC to it results in Zero balance… The coins are safe and still accessible with a different wallet app (like the Android version of Litewallet)
Support has acknowledged the issue and Devs are working to fix.
Just an FYI so others don’t have to go down the troubleshooting rabbithole for hours… 
Where did you get this news?
Support ticket.
(Litecoin Foundation: Litewallet)
Jan 5, 2023, 20:21 UTC
Our Devs have found the issue and are working on it. Please be patient and thank you for bringing this issue to our attention. We appreciate your support and always know that your Litecoin is safe on the blockchain and why it is so important to keep your seed phrases in a safe place as your coins are not on the actual wallet or any wallet for that matter but safe and sound on the blockchain.
Litewallet Support
I believe a similar issue happened to the Android version back in May. Looks like a syncing issue to me.