Litewallet acts more like a receiver and transmitter of Litecoin transactions and it does it all without any interaction from the Litewallet team.
You can trust us because we have no access to your seed nor your copy of Litewallet.
When an amount that was supposed to get to your Litewallet doesn't arrive, you must contact the sender.
Crypto exchanges don't send crypto immediately and you can wait for hours or days , depending on the exchange. Some users are getting Litecoin from a crypto casino. The issue is the same. Each commercial entity has different policies on when they are taking Litecoin from a custodial wallet to your Litewallet. You must ask them when it should arrive to the address you gave them.
One way to check the transaction is to use a blockchain explorer to lookup the address you gave to the sender. If the address is not found, that means it is not part of the network. If it is, it important that there are at least 6 confirmations. If it has, and it is not showed in your Litewallet, you may need to sync.